21742378

素因数分解:

$2^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{1489}}^1$

素因数の和:1654

約数の個数: 24

約数和(自身を含む): 38218500

約数和(自身を除く): 16476122

約数列:

[1, 2, 7, 14, 49, 98, 149, 298, 1043, 1489, 2086, 2978, 7301, 10423, 14602, 20846, 72961, 145922, 221861, 443722, 1553027, 3106054, 10871189, 21742378]

約数ペア:

[(1, 21742378), (2, 10871189), (7, 3106054), (14, 1553027), (49, 443722), (98, 221861), (149, 145922), (298, 72961), (1043, 20846), (1489, 14602), (2086, 10423), (2978, 7301)]