81368280

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:303

約数の個数: 256

約数和(自身を含む): 317952000

約数和(自身を除く): 236583720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 47, 54, 56, 60, 63, 70, 72, 84, 90, 94, 105, 108, 120, 126, 135, 140, 141, 168, 180, 188, 189, 210, 216, 229, 235, 252, 270, 280, 282, 315, 329, 360, 376, 378, 420, 423, 458, 470, 504, 540, 564, 630, 658, 687, 705, 756, 840, 846, 916, 940, 945, 987, 1080, 1128, 1145, 1260, 1269, 1316, 1374, 1410, 1512, 1603, 1645, 1692, 1832, 1880, 1890, 1974, 2061, 2115, 2290, 2520, 2538, 2632, 2748, 2820, 2961, 3206, 3290, 3384, 3435, 3780, 3948, 4122, 4230, 4580, 4809, 4935, 5076, 5496, 5640, 5922, 6183, 6345, 6412, 6580, 6870, 7560, 7896, 8015, 8244, 8460, 8883, 9160, 9618, 9870, 10152, 10305, 10763, 11844, 12366, 12690, 12824, 13160, 13740, 14427, 14805, 16030, 16488, 16920, 17766, 19236, 19740, 20610, 21526, 23688, 24045, 24732, 25380, 27480, 28854, 29610, 30915, 32060, 32289, 35532, 38472, 39480, 41220, 43052, 43281, 44415, 48090, 49464, 50760, 53815, 57708, 59220, 61830, 64120, 64578, 71064, 72135, 75341, 82440, 86104, 86562, 88830, 96180, 96867, 107630, 115416, 118440, 123660, 129156, 144270, 150682, 161445, 173124, 177660, 192360, 193734, 215260, 216405, 226023, 247320, 258312, 288540, 290601, 301364, 322890, 346248, 355320, 376705, 387468, 430520, 432810, 452046, 484335, 577080, 581202, 602728, 645780, 678069, 753410, 774936, 865620, 904092, 968670, 1130115, 1162404, 1291560, 1356138, 1453005, 1506820, 1731240, 1808184, 1937340, 2034207, 2260230, 2324808, 2712276, 2906010, 3013640, 3390345, 3874680, 4068414, 4520460, 5424552, 5812020, 6780690, 8136828, 9040920, 10171035, 11624040, 13561380, 16273656, 20342070, 27122760, 40684140, 81368280]

約数ペア:

[(1, 81368280), (2, 40684140), (3, 27122760), (4, 20342070), (5, 16273656), (6, 13561380), (7, 11624040), (8, 10171035), (9, 9040920), (10, 8136828), (12, 6780690), (14, 5812020), (15, 5424552), (18, 4520460), (20, 4068414), (21, 3874680), (24, 3390345), (27, 3013640), (28, 2906010), (30, 2712276), (35, 2324808), (36, 2260230), (40, 2034207), (42, 1937340), (45, 1808184), (47, 1731240), (54, 1506820), (56, 1453005), (60, 1356138), (63, 1291560), (70, 1162404), (72, 1130115), (84, 968670), (90, 904092), (94, 865620), (105, 774936), (108, 753410), (120, 678069), (126, 645780), (135, 602728), (140, 581202), (141, 577080), (168, 484335), (180, 452046), (188, 432810), (189, 430520), (210, 387468), (216, 376705), (229, 355320), (235, 346248), (252, 322890), (270, 301364), (280, 290601), (282, 288540), (315, 258312), (329, 247320), (360, 226023), (376, 216405), (378, 215260), (420, 193734), (423, 192360), (458, 177660), (470, 173124), (504, 161445), (540, 150682), (564, 144270), (630, 129156), (658, 123660), (687, 118440), (705, 115416), (756, 107630), (840, 96867), (846, 96180), (916, 88830), (940, 86562), (945, 86104), (987, 82440), (1080, 75341), (1128, 72135), (1145, 71064), (1260, 64578), (1269, 64120), (1316, 61830), (1374, 59220), (1410, 57708), (1512, 53815), (1603, 50760), (1645, 49464), (1692, 48090), (1832, 44415), (1880, 43281), (1890, 43052), (1974, 41220), (2061, 39480), (2115, 38472), (2290, 35532), (2520, 32289), (2538, 32060), (2632, 30915), (2748, 29610), (2820, 28854), (2961, 27480), (3206, 25380), (3290, 24732), (3384, 24045), (3435, 23688), (3780, 21526), (3948, 20610), (4122, 19740), (4230, 19236), (4580, 17766), (4809, 16920), (4935, 16488), (5076, 16030), (5496, 14805), (5640, 14427), (5922, 13740), (6183, 13160), (6345, 12824), (6412, 12690), (6580, 12366), (6870, 11844), (7560, 10763), (7896, 10305), (8015, 10152), (8244, 9870), (8460, 9618), (8883, 9160)]