20901477575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1\times {\mathrm{1553}}^1$

素因数の和:2132

約数の個数: 48

約数和(自身を含む): 28615356000

約数和(自身を除く): 7713878425

約数列:

[1, 5, 11, 25, 55, 109, 275, 449, 545, 1199, 1553, 2245, 2725, 4939, 5995, 7765, 11225, 17083, 24695, 29975, 38825, 48941, 85415, 123475, 169277, 244705, 427075, 538351, 697297, 846385, 1223525, 1862047, 2691755, 3486485, 4231925, 7670267, 9310235, 13458775, 17432425, 38351335, 46551175, 76005373, 191756675, 380026865, 836059103, 1900134325, 4180295515, 20901477575]

約数ペア:

[(1, 20901477575), (5, 4180295515), (11, 1900134325), (25, 836059103), (55, 380026865), (109, 191756675), (275, 76005373), (449, 46551175), (545, 38351335), (1199, 17432425), (1553, 13458775), (2245, 9310235), (2725, 7670267), (4939, 4231925), (5995, 3486485), (7765, 2691755), (11225, 1862047), (17083, 1223525), (24695, 846385), (29975, 697297), (38825, 538351), (48941, 427075), (85415, 244705), (123475, 169277)]