640416622

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{991357}}^1$

素因数の和:991395

約数の個数: 16

約数和(自身を含む): 1070666640

約数和(自身を除く): 430250018

約数列:

[1, 2, 17, 19, 34, 38, 323, 646, 991357, 1982714, 16853069, 18835783, 33706138, 37671566, 320208311, 640416622]

約数ペア:

[(1, 640416622), (2, 320208311), (17, 37671566), (19, 33706138), (34, 18835783), (38, 16853069), (323, 1982714), (646, 991357)]