21434080

素因数分解:

$2^5\times 5^1\times {\mathrm{133963}}^1$

素因数の和:133978

約数の個数: 24

約数和(自身を含む): 50638392

約数和(自身を除く): 29204312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133963, 267926, 535852, 669815, 1071704, 1339630, 2143408, 2679260, 4286816, 5358520, 10717040, 21434080]

約数ペア:

[(1, 21434080), (2, 10717040), (4, 5358520), (5, 4286816), (8, 2679260), (10, 2143408), (16, 1339630), (20, 1071704), (32, 669815), (40, 535852), (80, 267926), (160, 133963)]