21144991

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{1297}}^1$

素因数の和:1458

約数の個数: 16

約数和(自身を含む): 25793856

約数和(自身を除く): 4648865

約数列:

[1, 7, 17, 119, 137, 959, 1297, 2329, 9079, 16303, 22049, 154343, 177689, 1243823, 3020713, 21144991]

約数ペア:

[(1, 21144991), (7, 3020713), (17, 1243823), (119, 177689), (137, 154343), (959, 22049), (1297, 16303), (2329, 9079)]