1680404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{211}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 3241056

約数和(自身を除く): 1560652

約数列:

[1, 2, 4, 11, 22, 44, 181, 211, 362, 422, 724, 844, 1991, 2321, 3982, 4642, 7964, 9284, 38191, 76382, 152764, 420101, 840202, 1680404]

約数ペア:

[(1, 1680404), (2, 840202), (4, 420101), (11, 152764), (22, 76382), (44, 38191), (181, 9284), (211, 7964), (362, 4642), (422, 3982), (724, 2321), (844, 1991)]