81307810

素因数分解:

$2^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1\times {\mathrm{277}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 148618800

約数和(自身を除く): 67310990

約数列:

[1, 2, 5, 10, 149, 197, 277, 298, 394, 554, 745, 985, 1385, 1490, 1970, 2770, 29353, 41273, 54569, 58706, 82546, 109138, 146765, 206365, 272845, 293530, 412730, 545690, 8130781, 16261562, 40653905, 81307810]

約数ペア:

[(1, 81307810), (2, 40653905), (5, 16261562), (10, 8130781), (149, 545690), (197, 412730), (277, 293530), (298, 272845), (394, 206365), (554, 146765), (745, 109138), (985, 82546), (1385, 58706), (1490, 54569), (1970, 41273), (2770, 29353)]