21480556

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{577}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 38744496

約数和(自身を除く): 17263940

約数列:

[1, 2, 4, 41, 82, 164, 227, 454, 577, 908, 1154, 2308, 9307, 18614, 23657, 37228, 47314, 94628, 130979, 261958, 523916, 5370139, 10740278, 21480556]

約数ペア:

[(1, 21480556), (2, 10740278), (4, 5370139), (41, 523916), (82, 261958), (164, 130979), (227, 94628), (454, 47314), (577, 37228), (908, 23657), (1154, 18614), (2308, 9307)]