21268875

素因数分解:

$3^1\times 5^3\times {\mathrm{43}}^1\times {\mathrm{1319}}^1$

素因数の和:1380

約数の個数: 32

約数和(自身を含む): 36241920

約数和(自身を除く): 14973045

約数列:

[1, 3, 5, 15, 25, 43, 75, 125, 129, 215, 375, 645, 1075, 1319, 3225, 3957, 5375, 6595, 16125, 19785, 32975, 56717, 98925, 164875, 170151, 283585, 494625, 850755, 1417925, 4253775, 7089625, 21268875]

約数ペア:

[(1, 21268875), (3, 7089625), (5, 4253775), (15, 1417925), (25, 850755), (43, 494625), (75, 283585), (125, 170151), (129, 164875), (215, 98925), (375, 56717), (645, 32975), (1075, 19785), (1319, 16125), (3225, 6595), (3957, 5375)]