21988852

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{53}}^2\times {\mathrm{103}}^1$

素因数の和:232

約数の個数: 36

約数和(自身を含む): 41685280

約数和(自身を除く): 19696428

約数列:

[1, 2, 4, 19, 38, 53, 76, 103, 106, 206, 212, 412, 1007, 1957, 2014, 2809, 3914, 4028, 5459, 5618, 7828, 10918, 11236, 21836, 53371, 103721, 106742, 207442, 213484, 289327, 414884, 578654, 1157308, 5497213, 10994426, 21988852]

約数ペア:

[(1, 21988852), (2, 10994426), (4, 5497213), (19, 1157308), (38, 578654), (53, 414884), (76, 289327), (103, 213484), (106, 207442), (206, 106742), (212, 103721), (412, 53371), (1007, 21836), (1957, 11236), (2014, 10918), (2809, 7828), (3914, 5618), (4028, 5459)]