21217125

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1951}}^1$

素因数の和:1998

約数の個数: 32

約数和(自身を含む): 36541440

約数和(自身を除く): 15324315

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 435, 725, 1951, 2175, 3625, 5853, 9755, 10875, 29265, 48775, 56579, 146325, 169737, 243875, 282895, 731625, 848685, 1414475, 4243425, 7072375, 21217125]

約数ペア:

[(1, 21217125), (3, 7072375), (5, 4243425), (15, 1414475), (25, 848685), (29, 731625), (75, 282895), (87, 243875), (125, 169737), (145, 146325), (375, 56579), (435, 48775), (725, 29265), (1951, 10875), (2175, 9755), (3625, 5853)]