20021725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{691}}^1$

素因数の和:781

約数の個数: 24

約数和(自身を含む): 26600480

約数和(自身を除く): 6578755

約数列:

[1, 5, 19, 25, 61, 95, 305, 475, 691, 1159, 1525, 3455, 5795, 13129, 17275, 28975, 42151, 65645, 210755, 328225, 800869, 1053775, 4004345, 20021725]

約数ペア:

[(1, 20021725), (5, 4004345), (19, 1053775), (25, 800869), (61, 328225), (95, 210755), (305, 65645), (475, 42151), (691, 28975), (1159, 17275), (1525, 13129), (3455, 5795)]