20906925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{523}}^1$

素因数の和:590

約数の個数: 48

約数和(自身を含む): 38205888

約数和(自身を除く): 17298963

約数列:

[1, 3, 5, 13, 15, 25, 39, 41, 65, 75, 123, 195, 205, 325, 523, 533, 615, 975, 1025, 1569, 1599, 2615, 2665, 3075, 6799, 7845, 7995, 13075, 13325, 20397, 21443, 33995, 39225, 39975, 64329, 101985, 107215, 169975, 278759, 321645, 509925, 536075, 836277, 1393795, 1608225, 4181385, 6968975, 20906925]

約数ペア:

[(1, 20906925), (3, 6968975), (5, 4181385), (13, 1608225), (15, 1393795), (25, 836277), (39, 536075), (41, 509925), (65, 321645), (75, 278759), (123, 169975), (195, 107215), (205, 101985), (325, 64329), (523, 39975), (533, 39225), (615, 33995), (975, 21443), (1025, 20397), (1569, 13325), (1599, 13075), (2615, 7995), (2665, 7845), (3075, 6799)]