7709980

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{991}}^1$

素因数の和:1389

約数の個数: 24

約数和(自身を含む): 16248960

約数和(自身を除く): 8538980

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 991, 1556, 1945, 1982, 3890, 3964, 4955, 7780, 9910, 19820, 385499, 770998, 1541996, 1927495, 3854990, 7709980]

約数ペア:

[(1, 7709980), (2, 3854990), (4, 1927495), (5, 1541996), (10, 770998), (20, 385499), (389, 19820), (778, 9910), (991, 7780), (1556, 4955), (1945, 3964), (1982, 3890)]