21008830

素因数分解:

$2^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{9421}}^1$

素因数の和:9651

約数の個数: 16

約数和(自身を含む): 37989504

約数和(自身を除く): 16980674

約数列:

[1, 2, 5, 10, 223, 446, 1115, 2230, 9421, 18842, 47105, 94210, 2100883, 4201766, 10504415, 21008830]

約数ペア:

[(1, 21008830), (2, 10504415), (5, 4201766), (10, 2100883), (223, 94210), (446, 47105), (1115, 18842), (2230, 9421)]