20782736

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2437}}^1$

素因数の和:2499

約数の個数: 40

約数和(自身を含む): 44439864

約数和(自身を除く): 23657128

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2437, 4264, 4874, 8528, 9748, 19496, 31681, 38992, 63362, 99917, 126724, 199834, 253448, 399668, 506896, 799336, 1298921, 1598672, 2597842, 5195684, 10391368, 20782736]

約数ペア:

[(1, 20782736), (2, 10391368), (4, 5195684), (8, 2597842), (13, 1598672), (16, 1298921), (26, 799336), (41, 506896), (52, 399668), (82, 253448), (104, 199834), (164, 126724), (208, 99917), (328, 63362), (533, 38992), (656, 31681), (1066, 19496), (2132, 9748), (2437, 8528), (4264, 4874)]