20355075

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{6959}}^1$

素因数の和:6988

約数の個数: 36

約数和(自身を含む): 39268320

約数和(自身を除く): 18913245

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 6959, 20877, 34795, 62631, 90467, 104385, 173975, 271401, 313155, 452335, 521925, 814203, 1357005, 1565775, 2261675, 4071015, 6785025, 20355075]

約数ペア:

[(1, 20355075), (3, 6785025), (5, 4071015), (9, 2261675), (13, 1565775), (15, 1357005), (25, 814203), (39, 521925), (45, 452335), (65, 313155), (75, 271401), (117, 173975), (195, 104385), (225, 90467), (325, 62631), (585, 34795), (975, 20877), (2925, 6959)]