399918729

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{656681}}^1$

素因数の和:656720

約数の個数: 16

約数和(自身を含む): 630414720

約数和(自身を除く): 230495991

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 656681, 1970043, 4596767, 13790301, 19043749, 57131247, 133306243, 399918729]

約数ペア:

[(1, 399918729), (3, 133306243), (7, 57131247), (21, 19043749), (29, 13790301), (87, 4596767), (203, 1970043), (609, 656681)]