18956925

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{6481}}^1$

素因数の和:6510

約数の個数: 36

約数和(自身を含む): 36571444

約数和(自身を除く): 17614519

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 6481, 19443, 32405, 58329, 84253, 97215, 162025, 252759, 291645, 421265, 486075, 758277, 1263795, 1458225, 2106325, 3791385, 6318975, 18956925]

約数ペア:

[(1, 18956925), (3, 6318975), (5, 3791385), (9, 2106325), (13, 1458225), (15, 1263795), (25, 758277), (39, 486075), (45, 421265), (65, 291645), (75, 252759), (117, 162025), (195, 97215), (225, 84253), (325, 58329), (585, 32405), (975, 19443), (2925, 6481)]