21880456

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3449}}^1$

素因数の和:3529

約数の個数: 32

約数和(自身を含む): 44919000

約数和(自身を除く): 23038544

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3449, 6344, 6898, 13796, 27592, 44837, 89674, 179348, 210389, 358696, 420778, 841556, 1683112, 2735057, 5470114, 10940228, 21880456]

約数ペア:

[(1, 21880456), (2, 10940228), (4, 5470114), (8, 2735057), (13, 1683112), (26, 841556), (52, 420778), (61, 358696), (104, 210389), (122, 179348), (244, 89674), (488, 44837), (793, 27592), (1586, 13796), (3172, 6898), (3449, 6344)]