81078360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{257}}^1$

素因数の和:521

約数の個数: 128

約数和(自身を含む): 267494400

約数和(自身を除く): 186416040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 239, 257, 264, 330, 440, 478, 514, 660, 717, 771, 956, 1028, 1195, 1285, 1320, 1434, 1542, 1912, 2056, 2390, 2570, 2629, 2827, 2868, 3084, 3585, 3855, 4780, 5140, 5258, 5654, 5736, 6168, 7170, 7710, 7887, 8481, 9560, 10280, 10516, 11308, 13145, 14135, 14340, 15420, 15774, 16962, 21032, 22616, 26290, 28270, 28680, 30840, 31548, 33924, 39435, 42405, 52580, 56540, 61423, 63096, 67848, 78870, 84810, 105160, 113080, 122846, 157740, 169620, 184269, 245692, 307115, 315480, 339240, 368538, 491384, 614230, 675653, 737076, 921345, 1228460, 1351306, 1474152, 1842690, 2026959, 2456920, 2702612, 3378265, 3685380, 4053918, 5405224, 6756530, 7370760, 8107836, 10134795, 13513060, 16215672, 20269590, 27026120, 40539180, 81078360]

約数ペア:

[(1, 81078360), (2, 40539180), (3, 27026120), (4, 20269590), (5, 16215672), (6, 13513060), (8, 10134795), (10, 8107836), (11, 7370760), (12, 6756530), (15, 5405224), (20, 4053918), (22, 3685380), (24, 3378265), (30, 2702612), (33, 2456920), (40, 2026959), (44, 1842690), (55, 1474152), (60, 1351306), (66, 1228460), (88, 921345), (110, 737076), (120, 675653), (132, 614230), (165, 491384), (220, 368538), (239, 339240), (257, 315480), (264, 307115), (330, 245692), (440, 184269), (478, 169620), (514, 157740), (660, 122846), (717, 113080), (771, 105160), (956, 84810), (1028, 78870), (1195, 67848), (1285, 63096), (1320, 61423), (1434, 56540), (1542, 52580), (1912, 42405), (2056, 39435), (2390, 33924), (2570, 31548), (2629, 30840), (2827, 28680), (2868, 28270), (3084, 26290), (3585, 22616), (3855, 21032), (4780, 16962), (5140, 15774), (5258, 15420), (5654, 14340), (5736, 14135), (6168, 13145), (7170, 11308), (7710, 10516), (7887, 10280), (8481, 9560)]