20012849360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{185167}}^1$

素因数の和:185380

約数の個数: 80

約数和(自身を含む): 53452816896

約数和(自身を除く): 33439967536

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 193, 280, 386, 560, 772, 965, 1351, 1544, 1930, 2702, 3088, 3860, 5404, 6755, 7720, 10808, 13510, 15440, 21616, 27020, 54040, 108080, 185167, 370334, 740668, 925835, 1296169, 1481336, 1851670, 2592338, 2962672, 3703340, 5184676, 6480845, 7406680, 10369352, 12961690, 14813360, 20738704, 25923380, 35737231, 51846760, 71474462, 103693520, 142948924, 178686155, 250160617, 285897848, 357372310, 500321234, 571795696, 714744620, 1000642468, 1250803085, 1429489240, 2001284936, 2501606170, 2858978480, 4002569872, 5003212340, 10006424680, 20012849360]

約数ペア:

[(1, 20012849360), (2, 10006424680), (4, 5003212340), (5, 4002569872), (7, 2858978480), (8, 2501606170), (10, 2001284936), (14, 1429489240), (16, 1250803085), (20, 1000642468), (28, 714744620), (35, 571795696), (40, 500321234), (56, 357372310), (70, 285897848), (80, 250160617), (112, 178686155), (140, 142948924), (193, 103693520), (280, 71474462), (386, 51846760), (560, 35737231), (772, 25923380), (965, 20738704), (1351, 14813360), (1544, 12961690), (1930, 10369352), (2702, 7406680), (3088, 6480845), (3860, 5184676), (5404, 3703340), (6755, 2962672), (7720, 2592338), (10808, 1851670), (13510, 1481336), (15440, 1296169), (21616, 925835), (27020, 740668), (54040, 370334), (108080, 185167)]