31530320

素因数分解:

$2^4\times 5^1\times {\mathrm{394129}}^1$

素因数の和:394142

約数の個数: 20

約数和(自身を含む): 73308180

約数和(自身を除く): 41777860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 394129, 788258, 1576516, 1970645, 3153032, 3941290, 6306064, 7882580, 15765160, 31530320]

約数ペア:

[(1, 31530320), (2, 15765160), (4, 7882580), (5, 6306064), (8, 3941290), (10, 3153032), (16, 1970645), (20, 1576516), (40, 788258), (80, 394129)]