21000340875

素因数分解:

$3^1\times 5^3\times {\mathrm{9931}}^1\times {\mathrm{5639}}^1$

素因数の和:15588

約数の個数: 32

約数和(自身を含む): 34954283520

約数和(自身を除く): 13953942645

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 5639, 9931, 16917, 28195, 29793, 49655, 84585, 140975, 148965, 248275, 422925, 704875, 744825, 1241375, 2114625, 3724125, 56000909, 168002727, 280004545, 840013635, 1400022725, 4200068175, 7000113625, 21000340875]

約数ペア:

[(1, 21000340875), (3, 7000113625), (5, 4200068175), (15, 1400022725), (25, 840013635), (75, 280004545), (125, 168002727), (375, 56000909), (5639, 3724125), (9931, 2114625), (16917, 1241375), (28195, 744825), (29793, 704875), (49655, 422925), (84585, 248275), (140975, 148965)]