21808774

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{113}}^1\times {\mathrm{571}}^1$

素因数の和:712

約数の個数: 24

約数和(自身を含む): 35799192

約数和(自身を除く): 13990418

約数列:

[1, 2, 13, 26, 113, 169, 226, 338, 571, 1142, 1469, 2938, 7423, 14846, 19097, 38194, 64523, 96499, 129046, 192998, 838799, 1677598, 10904387, 21808774]

約数ペア:

[(1, 21808774), (2, 10904387), (13, 1677598), (26, 838799), (113, 192998), (169, 129046), (226, 96499), (338, 64523), (571, 38194), (1142, 19097), (1469, 14846), (2938, 7423)]