639734679

素因数分解:

$3^7\times {\mathrm{292517}}^1$

素因数の和:292538

約数の個数: 16

約数和(自身を含む): 959459040

約数和(自身を除く): 319724361

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 292517, 877551, 2632653, 7897959, 23693877, 71081631, 213244893, 639734679]

約数ペア:

[(1, 639734679), (3, 213244893), (9, 71081631), (27, 23693877), (81, 7897959), (243, 2632653), (729, 877551), (2187, 292517)]