291275187

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{487}}^1\times {\mathrm{1499}}^1$

素因数の和:2015

約数の個数: 32

約数和(自身を含む): 468480000

約数和(自身を除く): 177204813

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 487, 1461, 1499, 3409, 4497, 9253, 10227, 10493, 27759, 28481, 31479, 64771, 85443, 194313, 199367, 598101, 730013, 2190039, 5110091, 13870247, 15330273, 41610741, 97091729, 291275187]

約数ペア:

[(1, 291275187), (3, 97091729), (7, 41610741), (19, 15330273), (21, 13870247), (57, 5110091), (133, 2190039), (399, 730013), (487, 598101), (1461, 199367), (1499, 194313), (3409, 85443), (4497, 64771), (9253, 31479), (10227, 28481), (10493, 27759)]