21491625

素因数分解:

$3^1\times 5^3\times {\mathrm{223}}^1\times {\mathrm{257}}^1$

素因数の和:498

約数の個数: 32

約数和(自身を含む): 36062208

約数和(自身を除く): 14570583

約数列:

[1, 3, 5, 15, 25, 75, 125, 223, 257, 375, 669, 771, 1115, 1285, 3345, 3855, 5575, 6425, 16725, 19275, 27875, 32125, 57311, 83625, 96375, 171933, 286555, 859665, 1432775, 4298325, 7163875, 21491625]

約数ペア:

[(1, 21491625), (3, 7163875), (5, 4298325), (15, 1432775), (25, 859665), (75, 286555), (125, 171933), (223, 96375), (257, 83625), (375, 57311), (669, 32125), (771, 27875), (1115, 19275), (1285, 16725), (3345, 6425), (3855, 5575)]