180781240

素因数分解:

$2^3\times 5^1\times {\mathrm{863}}^1\times {\mathrm{5237}}^1$

素因数の和:6111

約数の個数: 32

約数和(自身を含む): 407306880

約数和(自身を除く): 226525640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 863, 1726, 3452, 4315, 5237, 6904, 8630, 10474, 17260, 20948, 26185, 34520, 41896, 52370, 104740, 209480, 4519531, 9039062, 18078124, 22597655, 36156248, 45195310, 90390620, 180781240]

約数ペア:

[(1, 180781240), (2, 90390620), (4, 45195310), (5, 36156248), (8, 22597655), (10, 18078124), (20, 9039062), (40, 4519531), (863, 209480), (1726, 104740), (3452, 52370), (4315, 41896), (5237, 34520), (6904, 26185), (8630, 20948), (10474, 17260)]