21535660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26263}}^1$

素因数の和:26313

約数の個数: 24

約数和(自身を含む): 46329696

約数和(自身を除く): 24794036

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26263, 52526, 105052, 131315, 262630, 525260, 1076783, 2153566, 4307132, 5383915, 10767830, 21535660]

約数ペア:

[(1, 21535660), (2, 10767830), (4, 5383915), (5, 4307132), (10, 2153566), (20, 1076783), (41, 525260), (82, 262630), (164, 131315), (205, 105052), (410, 52526), (820, 26263)]