991728740

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{541}}^1\times {\mathrm{607}}^1$

素因数の和:1308

約数の個数: 48

約数和(自身を含む): 2103757824

約数和(自身を除く): 1112029084

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 541, 604, 607, 755, 1082, 1214, 1510, 2164, 2428, 2705, 3020, 3035, 5410, 6070, 10820, 12140, 81691, 91657, 163382, 183314, 326764, 328387, 366628, 408455, 458285, 656774, 816910, 916570, 1313548, 1633820, 1641935, 1833140, 3283870, 6567740, 49586437, 99172874, 198345748, 247932185, 495864370, 991728740]

約数ペア:

[(1, 991728740), (2, 495864370), (4, 247932185), (5, 198345748), (10, 99172874), (20, 49586437), (151, 6567740), (302, 3283870), (541, 1833140), (604, 1641935), (607, 1633820), (755, 1313548), (1082, 916570), (1214, 816910), (1510, 656774), (2164, 458285), (2428, 408455), (2705, 366628), (3020, 328387), (3035, 326764), (5410, 183314), (6070, 163382), (10820, 91657), (12140, 81691)]