21740420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83617}}^1$

素因数の和:83639

約数の個数: 24

約数和(自身を含む): 49167384

約数和(自身を除く): 27426964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83617, 167234, 334468, 418085, 836170, 1087021, 1672340, 2174042, 4348084, 5435105, 10870210, 21740420]

約数ペア:

[(1, 21740420), (2, 10870210), (4, 5435105), (5, 4348084), (10, 2174042), (13, 1672340), (20, 1087021), (26, 836170), (52, 418085), (65, 334468), (130, 167234), (260, 83617)]