12991475

素因数分解:

$5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1217}}^1$

素因数の和:1295

約数の個数: 24

約数和(自身を含む): 18727968

約数和(自身を除く): 5736493

約数列:

[1, 5, 7, 25, 35, 61, 175, 305, 427, 1217, 1525, 2135, 6085, 8519, 10675, 30425, 42595, 74237, 212975, 371185, 519659, 1855925, 2598295, 12991475]

約数ペア:

[(1, 12991475), (5, 2598295), (7, 1855925), (25, 519659), (35, 371185), (61, 212975), (175, 74237), (305, 42595), (427, 30425), (1217, 10675), (1525, 8519), (2135, 6085)]