3971390

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{971}}^1$

素因数の和:1387

約数の個数: 16

約数和(自身を含む): 7173360

約数和(自身を除く): 3201970

約数列:

[1, 2, 5, 10, 409, 818, 971, 1942, 2045, 4090, 4855, 9710, 397139, 794278, 1985695, 3971390]

約数ペア:

[(1, 3971390), (2, 1985695), (5, 794278), (10, 397139), (409, 9710), (818, 4855), (971, 4090), (1942, 2045)]