19901700

素因数分解:

$2^2\times 3^7\times 5^2\times 7^1\times {\mathrm{13}}^1$

素因数の和:55

約数の個数: 288

約数和(自身を含む): 79717120

約数和(自身を除く): 59815420

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 25, 26, 27, 28, 30, 35, 36, 39, 42, 45, 50, 52, 54, 60, 63, 65, 70, 75, 78, 81, 84, 90, 91, 100, 105, 108, 117, 126, 130, 135, 140, 150, 156, 162, 175, 180, 182, 189, 195, 210, 225, 234, 243, 252, 260, 270, 273, 300, 315, 324, 325, 350, 351, 364, 378, 390, 405, 420, 450, 455, 468, 486, 525, 540, 546, 567, 585, 630, 650, 675, 700, 702, 729, 756, 780, 810, 819, 900, 910, 945, 972, 975, 1050, 1053, 1092, 1134, 1170, 1215, 1260, 1300, 1350, 1365, 1404, 1458, 1575, 1620, 1638, 1701, 1755, 1820, 1890, 1950, 2025, 2100, 2106, 2187, 2268, 2275, 2340, 2430, 2457, 2700, 2730, 2835, 2916, 2925, 3150, 3159, 3276, 3402, 3510, 3645, 3780, 3900, 4050, 4095, 4212, 4374, 4550, 4725, 4860, 4914, 5103, 5265, 5460, 5670, 5850, 6075, 6300, 6318, 6804, 6825, 7020, 7290, 7371, 8100, 8190, 8505, 8748, 8775, 9100, 9450, 9477, 9828, 10206, 10530, 10935, 11340, 11700, 12150, 12285, 12636, 13650, 14175, 14580, 14742, 15309, 15795, 16380, 17010, 17550, 18225, 18900, 18954, 20412, 20475, 21060, 21870, 22113, 24300, 24570, 25515, 26325, 27300, 28350, 28431, 29484, 30618, 31590, 34020, 35100, 36450, 36855, 37908, 40950, 42525, 43740, 44226, 47385, 49140, 51030, 52650, 54675, 56700, 56862, 61236, 61425, 63180, 66339, 72900, 73710, 76545, 78975, 81900, 85050, 88452, 94770, 102060, 105300, 109350, 110565, 113724, 122850, 127575, 132678, 142155, 147420, 153090, 157950, 170100, 184275, 189540, 199017, 218700, 221130, 236925, 245700, 255150, 265356, 284310, 306180, 315900, 331695, 368550, 382725, 398034, 442260, 473850, 510300, 552825, 568620, 663390, 710775, 737100, 765450, 796068, 947700, 995085, 1105650, 1326780, 1421550, 1530900, 1658475, 1990170, 2211300, 2843100, 3316950, 3980340, 4975425, 6633900, 9950850, 19901700]

約数ペア:

[(1, 19901700), (2, 9950850), (3, 6633900), (4, 4975425), (5, 3980340), (6, 3316950), (7, 2843100), (9, 2211300), (10, 1990170), (12, 1658475), (13, 1530900), (14, 1421550), (15, 1326780), (18, 1105650), (20, 995085), (21, 947700), (25, 796068), (26, 765450), (27, 737100), (28, 710775), (30, 663390), (35, 568620), (36, 552825), (39, 510300), (42, 473850), (45, 442260), (50, 398034), (52, 382725), (54, 368550), (60, 331695), (63, 315900), (65, 306180), (70, 284310), (75, 265356), (78, 255150), (81, 245700), (84, 236925), (90, 221130), (91, 218700), (100, 199017), (105, 189540), (108, 184275), (117, 170100), (126, 157950), (130, 153090), (135, 147420), (140, 142155), (150, 132678), (156, 127575), (162, 122850), (175, 113724), (180, 110565), (182, 109350), (189, 105300), (195, 102060), (210, 94770), (225, 88452), (234, 85050), (243, 81900), (252, 78975), (260, 76545), (270, 73710), (273, 72900), (300, 66339), (315, 63180), (324, 61425), (325, 61236), (350, 56862), (351, 56700), (364, 54675), (378, 52650), (390, 51030), (405, 49140), (420, 47385), (450, 44226), (455, 43740), (468, 42525), (486, 40950), (525, 37908), (540, 36855), (546, 36450), (567, 35100), (585, 34020), (630, 31590), (650, 30618), (675, 29484), (700, 28431), (702, 28350), (729, 27300), (756, 26325), (780, 25515), (810, 24570), (819, 24300), (900, 22113), (910, 21870), (945, 21060), (972, 20475), (975, 20412), (1050, 18954), (1053, 18900), (1092, 18225), (1134, 17550), (1170, 17010), (1215, 16380), (1260, 15795), (1300, 15309), (1350, 14742), (1365, 14580), (1404, 14175), (1458, 13650), (1575, 12636), (1620, 12285), (1638, 12150), (1701, 11700), (1755, 11340), (1820, 10935), (1890, 10530), (1950, 10206), (2025, 9828), (2100, 9477), (2106, 9450), (2187, 9100), (2268, 8775), (2275, 8748), (2340, 8505), (2430, 8190), (2457, 8100), (2700, 7371), (2730, 7290), (2835, 7020), (2916, 6825), (2925, 6804), (3150, 6318), (3159, 6300), (3276, 6075), (3402, 5850), (3510, 5670), (3645, 5460), (3780, 5265), (3900, 5103), (4050, 4914), (4095, 4860), (4212, 4725), (4374, 4550)]