21000895447

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{25211159}}^1$

素因数の和:25211190

約数の個数: 12

約数和(自身を含む): 25866650160

約数和(自身を除く): 4865754713

約数列:

[1, 7, 17, 49, 119, 833, 25211159, 176478113, 428589703, 1235346791, 3000127921, 21000895447]

約数ペア:

[(1, 21000895447), (7, 3000127921), (17, 1235346791), (49, 428589703), (119, 176478113), (833, 25211159)]