21493875

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{4409}}^1$

素因数の和:4440

約数の個数: 32

約数和(自身を含む): 38525760

約数和(自身を除く): 17031885

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 975, 1625, 4409, 4875, 13227, 22045, 57317, 66135, 110225, 171951, 286585, 330675, 551125, 859755, 1432925, 1653375, 4298775, 7164625, 21493875]

約数ペア:

[(1, 21493875), (3, 7164625), (5, 4298775), (13, 1653375), (15, 1432925), (25, 859755), (39, 551125), (65, 330675), (75, 286585), (125, 171951), (195, 110225), (325, 66135), (375, 57317), (975, 22045), (1625, 13227), (4409, 4875)]