81793840

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:358

約数の個数: 80

約数和(自身を含む): 196701696

約数和(自身を除く): 114907856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 101, 106, 191, 202, 212, 265, 382, 404, 424, 505, 530, 764, 808, 848, 955, 1010, 1060, 1528, 1616, 1910, 2020, 2120, 3056, 3820, 4040, 4240, 5353, 7640, 8080, 10123, 10706, 15280, 19291, 20246, 21412, 26765, 38582, 40492, 42824, 50615, 53530, 77164, 80984, 85648, 96455, 101230, 107060, 154328, 161968, 192910, 202460, 214120, 308656, 385820, 404920, 428240, 771640, 809840, 1022423, 1543280, 2044846, 4089692, 5112115, 8179384, 10224230, 16358768, 20448460, 40896920, 81793840]

約数ペア:

[(1, 81793840), (2, 40896920), (4, 20448460), (5, 16358768), (8, 10224230), (10, 8179384), (16, 5112115), (20, 4089692), (40, 2044846), (53, 1543280), (80, 1022423), (101, 809840), (106, 771640), (191, 428240), (202, 404920), (212, 385820), (265, 308656), (382, 214120), (404, 202460), (424, 192910), (505, 161968), (530, 154328), (764, 107060), (808, 101230), (848, 96455), (955, 85648), (1010, 80984), (1060, 77164), (1528, 53530), (1616, 50615), (1910, 42824), (2020, 40492), (2120, 38582), (3056, 26765), (3820, 21412), (4040, 20246), (4240, 19291), (5353, 15280), (7640, 10706), (8080, 10123)]