20836420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1787}}^1$

素因数の和:1860

約数の個数: 48

約数和(自身を含む): 48662208

約数和(自身を除く): 27825788

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1787, 2332, 2915, 3574, 5830, 7148, 8935, 11660, 17870, 19657, 35740, 39314, 78628, 94711, 98285, 189422, 196570, 378844, 393140, 473555, 947110, 1041821, 1894220, 2083642, 4167284, 5209105, 10418210, 20836420]

約数ペア:

[(1, 20836420), (2, 10418210), (4, 5209105), (5, 4167284), (10, 2083642), (11, 1894220), (20, 1041821), (22, 947110), (44, 473555), (53, 393140), (55, 378844), (106, 196570), (110, 189422), (212, 98285), (220, 94711), (265, 78628), (530, 39314), (583, 35740), (1060, 19657), (1166, 17870), (1787, 11660), (2332, 8935), (2915, 7148), (3574, 5830)]