21053516

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43499}}^1$

素因数の和:43525

約数の個数: 18

約数和(自身を含む): 40498500

約数和(自身を除く): 19444984

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43499, 86998, 173996, 478489, 956978, 1913956, 5263379, 10526758, 21053516]

約数ペア:

[(1, 21053516), (2, 10526758), (4, 5263379), (11, 1913956), (22, 956978), (44, 478489), (121, 173996), (242, 86998), (484, 43499)]