21019125

素因数分解:

$3^1\times 5^3\times {\mathrm{23}}^1\times {\mathrm{2437}}^1$

素因数の和:2478

約数の個数: 32

約数和(自身を含む): 36511488

約数和(自身を除く): 15492363

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 125, 345, 375, 575, 1725, 2437, 2875, 7311, 8625, 12185, 36555, 56051, 60925, 168153, 182775, 280255, 304625, 840765, 913875, 1401275, 4203825, 7006375, 21019125]

約数ペア:

[(1, 21019125), (3, 7006375), (5, 4203825), (15, 1401275), (23, 913875), (25, 840765), (69, 304625), (75, 280255), (115, 182775), (125, 168153), (345, 60925), (375, 56051), (575, 36555), (1725, 12185), (2437, 8625), (2875, 7311)]