21422821

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{271}}^1\times {\mathrm{491}}^1$

素因数の和:792

約数の個数: 16

約数和(自身を含む): 25694208

約数和(自身を除く): 4271387

約数列:

[1, 7, 23, 161, 271, 491, 1897, 3437, 6233, 11293, 43631, 79051, 133061, 931427, 3060403, 21422821]

約数ペア:

[(1, 21422821), (7, 3060403), (23, 931427), (161, 133061), (271, 79051), (491, 43631), (1897, 11293), (3437, 6233)]