15642921

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 9516759

約数列:

[1, 3, 7, 21, 23, 69, 139, 161, 233, 417, 483, 699, 973, 1631, 2919, 3197, 4893, 5359, 9591, 16077, 22379, 32387, 37513, 67137, 97161, 112539, 226709, 680127, 744901, 2234703, 5214307, 15642921]

約数ペア:

[(1, 15642921), (3, 5214307), (7, 2234703), (21, 744901), (23, 680127), (69, 226709), (139, 112539), (161, 97161), (233, 67137), (417, 37513), (483, 32387), (699, 22379), (973, 16077), (1631, 9591), (2919, 5359), (3197, 4893)]