21717375

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1997}}^1$

素因数の和:2044

約数の個数: 32

約数和(自身を含む): 37402560

約数和(自身を除く): 15685185

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 435, 725, 1997, 2175, 3625, 5991, 9985, 10875, 29955, 49925, 57913, 149775, 173739, 249625, 289565, 748875, 868695, 1447825, 4343475, 7239125, 21717375]

約数ペア:

[(1, 21717375), (3, 7239125), (5, 4343475), (15, 1447825), (25, 868695), (29, 748875), (75, 289565), (87, 249625), (125, 173739), (145, 149775), (375, 57913), (435, 49925), (725, 29955), (1997, 10875), (2175, 9985), (3625, 5991)]