20785648

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7687}}^1$

素因数の和:7721

約数の個数: 30

約数和(自身を含む): 43614024

約数和(自身を除く): 22828376

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7687, 15374, 30748, 61496, 99931, 122992, 199862, 399724, 799448, 1299103, 1598896, 2598206, 5196412, 10392824, 20785648]

約数ペア:

[(1, 20785648), (2, 10392824), (4, 5196412), (8, 2598206), (13, 1598896), (16, 1299103), (26, 799448), (52, 399724), (104, 199862), (169, 122992), (208, 99931), (338, 61496), (676, 30748), (1352, 15374), (2704, 7687)]