39780890

素因数分解:

$2^1\times 5^1\times {\mathrm{1951}}^1\times {\mathrm{2039}}^1$

素因数の和:3997

約数の個数: 16

約数和(自身を含む): 71677440

約数和(自身を除く): 31896550

約数列:

[1, 2, 5, 10, 1951, 2039, 3902, 4078, 9755, 10195, 19510, 20390, 3978089, 7956178, 19890445, 39780890]

約数ペア:

[(1, 39780890), (2, 19890445), (5, 7956178), (10, 3978089), (1951, 20390), (2039, 19510), (3902, 10195), (4078, 9755)]