21075375

素因数分解:

$3^1\times 5^3\times {\mathrm{43}}^1\times {\mathrm{1307}}^1$

素因数の和:1368

約数の個数: 32

約数和(自身を含む): 35912448

約数和(自身を除く): 14837073

約数列:

[1, 3, 5, 15, 25, 43, 75, 125, 129, 215, 375, 645, 1075, 1307, 3225, 3921, 5375, 6535, 16125, 19605, 32675, 56201, 98025, 163375, 168603, 281005, 490125, 843015, 1405025, 4215075, 7025125, 21075375]

約数ペア:

[(1, 21075375), (3, 7025125), (5, 4215075), (15, 1405025), (25, 843015), (43, 490125), (75, 281005), (125, 168603), (129, 163375), (215, 98025), (375, 56201), (645, 32675), (1075, 19605), (1307, 16125), (3225, 6535), (3921, 5375)]