21000339375

素因数分解:

$3^1\times 5^4\times {\mathrm{149}}^1\times {\mathrm{75169}}^1$

素因数の和:75341

約数の個数: 40

約数和(自身を含む): 35224662000

約数和(自身を除く): 14224322625

約数列:

[1, 3, 5, 15, 25, 75, 125, 149, 375, 447, 625, 745, 1875, 2235, 3725, 11175, 18625, 55875, 75169, 93125, 225507, 279375, 375845, 1127535, 1879225, 5637675, 9396125, 11200181, 28188375, 33600543, 46980625, 56000905, 140941875, 168002715, 280004525, 840013575, 1400022625, 4200067875, 7000113125, 21000339375]

約数ペア:

[(1, 21000339375), (3, 7000113125), (5, 4200067875), (15, 1400022625), (25, 840013575), (75, 280004525), (125, 168002715), (149, 140941875), (375, 56000905), (447, 46980625), (625, 33600543), (745, 28188375), (1875, 11200181), (2235, 9396125), (3725, 5637675), (11175, 1879225), (18625, 1127535), (55875, 375845), (75169, 279375), (93125, 225507)]