20013502465

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{397}}^1\times {\mathrm{2539}}^1$

素因数の和:2990

約数の個数: 48

約数和(自身を含む): 27731557440

約数和(自身を除く): 7718054975

約数列:

[1, 5, 11, 19, 55, 95, 209, 361, 397, 1045, 1805, 1985, 2539, 3971, 4367, 7543, 12695, 19855, 21835, 27929, 37715, 48241, 82973, 139645, 143317, 241205, 414865, 530651, 716585, 916579, 1007983, 1576487, 2653255, 4582895, 5039915, 7882435, 10082369, 11087813, 19151677, 50411845, 55439065, 95758385, 210668447, 363881863, 1053342235, 1819409315, 4002700493, 20013502465]

約数ペア:

[(1, 20013502465), (5, 4002700493), (11, 1819409315), (19, 1053342235), (55, 363881863), (95, 210668447), (209, 95758385), (361, 55439065), (397, 50411845), (1045, 19151677), (1805, 11087813), (1985, 10082369), (2539, 7882435), (3971, 5039915), (4367, 4582895), (7543, 2653255), (12695, 1576487), (19855, 1007983), (21835, 916579), (27929, 716585), (37715, 530651), (48241, 414865), (82973, 241205), (139645, 143317)]