28005140

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{5167}}^1$

素因数の和:5447

約数の個数: 24

約数和(自身を含む): 59039232

約数和(自身を除く): 31034092

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 5167, 5420, 10334, 20668, 25835, 51670, 103340, 1400257, 2800514, 5601028, 7001285, 14002570, 28005140]

約数ペア:

[(1, 28005140), (2, 14002570), (4, 7001285), (5, 5601028), (10, 2800514), (20, 1400257), (271, 103340), (542, 51670), (1084, 25835), (1355, 20668), (2710, 10334), (5167, 5420)]