21912715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1667}}^1$

素因数の和:1922

約数の個数: 16

約数和(自身を含む): 28823040

約数和(自身を除く): 6910325

約数列:

[1, 5, 11, 55, 239, 1195, 1667, 2629, 8335, 13145, 18337, 91685, 398413, 1992065, 4382543, 21912715]

約数ペア:

[(1, 21912715), (5, 4382543), (11, 1992065), (55, 398413), (239, 91685), (1195, 18337), (1667, 13145), (2629, 8335)]