75989980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{3881}}^1$

素因数の和:3990

約数の個数: 48

約数和(自身を含む): 176087520

約数和(自身を除く): 100097540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3881, 3916, 4895, 7762, 9790, 15524, 19405, 19580, 38810, 42691, 77620, 85382, 170764, 213455, 345409, 426910, 690818, 853820, 1381636, 1727045, 3454090, 3799499, 6908180, 7598998, 15197996, 18997495, 37994990, 75989980]

約数ペア:

[(1, 75989980), (2, 37994990), (4, 18997495), (5, 15197996), (10, 7598998), (11, 6908180), (20, 3799499), (22, 3454090), (44, 1727045), (55, 1381636), (89, 853820), (110, 690818), (178, 426910), (220, 345409), (356, 213455), (445, 170764), (890, 85382), (979, 77620), (1780, 42691), (1958, 38810), (3881, 19580), (3916, 19405), (4895, 15524), (7762, 9790)]