1990170

素因数分解:

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

素因数の和:48

約数の個数: 128

約数和(自身を含む): 6612480

約数和(自身を除く): 4622310

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 27, 30, 35, 39, 42, 45, 54, 63, 65, 70, 78, 81, 90, 91, 105, 117, 126, 130, 135, 162, 182, 189, 195, 210, 234, 243, 270, 273, 315, 351, 378, 390, 405, 455, 486, 546, 567, 585, 630, 702, 729, 810, 819, 910, 945, 1053, 1134, 1170, 1215, 1365, 1458, 1638, 1701, 1755, 1890, 2106, 2187, 2430, 2457, 2730, 2835, 3159, 3402, 3510, 3645, 4095, 4374, 4914, 5103, 5265, 5670, 6318, 7290, 7371, 8190, 8505, 9477, 10206, 10530, 10935, 12285, 14742, 15309, 15795, 17010, 18954, 21870, 22113, 24570, 25515, 28431, 30618, 31590, 36855, 44226, 47385, 51030, 56862, 66339, 73710, 76545, 94770, 110565, 132678, 142155, 153090, 199017, 221130, 284310, 331695, 398034, 663390, 995085, 1990170]

約数ペア:

[(1, 1990170), (2, 995085), (3, 663390), (5, 398034), (6, 331695), (7, 284310), (9, 221130), (10, 199017), (13, 153090), (14, 142155), (15, 132678), (18, 110565), (21, 94770), (26, 76545), (27, 73710), (30, 66339), (35, 56862), (39, 51030), (42, 47385), (45, 44226), (54, 36855), (63, 31590), (65, 30618), (70, 28431), (78, 25515), (81, 24570), (90, 22113), (91, 21870), (105, 18954), (117, 17010), (126, 15795), (130, 15309), (135, 14742), (162, 12285), (182, 10935), (189, 10530), (195, 10206), (210, 9477), (234, 8505), (243, 8190), (270, 7371), (273, 7290), (315, 6318), (351, 5670), (378, 5265), (390, 5103), (405, 4914), (455, 4374), (486, 4095), (546, 3645), (567, 3510), (585, 3402), (630, 3159), (702, 2835), (729, 2730), (810, 2457), (819, 2430), (910, 2187), (945, 2106), (1053, 1890), (1134, 1755), (1170, 1701), (1215, 1638), (1365, 1458)]