21295875

素因数分解:

$3^1\times 5^3\times {\mathrm{109}}^1\times {\mathrm{521}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 35830080

約数和(自身を除く): 14534205

約数列:

[1, 3, 5, 15, 25, 75, 109, 125, 327, 375, 521, 545, 1563, 1635, 2605, 2725, 7815, 8175, 13025, 13625, 39075, 40875, 56789, 65125, 170367, 195375, 283945, 851835, 1419725, 4259175, 7098625, 21295875]

約数ペア:

[(1, 21295875), (3, 7098625), (5, 4259175), (15, 1419725), (25, 851835), (75, 283945), (109, 195375), (125, 170367), (327, 65125), (375, 56789), (521, 40875), (545, 39075), (1563, 13625), (1635, 13025), (2605, 8175), (2725, 7815)]