640505085

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3881849}}^1$

素因数の和:3881868

約数の個数: 16

約数和(自身を含む): 1117972800

約数和(自身を除く): 477467715

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 3881849, 11645547, 19409245, 42700339, 58227735, 128101017, 213501695, 640505085]

約数ペア:

[(1, 640505085), (3, 213501695), (5, 128101017), (11, 58227735), (15, 42700339), (33, 19409245), (55, 11645547), (165, 3881849)]