20120690864

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{154243}}^1$

素因数の和:154545

約数の個数: 40

約数和(自身を含む): 40394652672

約数和(自身を除く): 20273961808

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 263, 496, 526, 1052, 2104, 4208, 8153, 16306, 32612, 65224, 130448, 154243, 308486, 616972, 1233944, 2467888, 4781533, 9563066, 19126132, 38252264, 40565909, 76504528, 81131818, 162263636, 324527272, 649054544, 1257543179, 2515086358, 5030172716, 10060345432, 20120690864]

約数ペア:

[(1, 20120690864), (2, 10060345432), (4, 5030172716), (8, 2515086358), (16, 1257543179), (31, 649054544), (62, 324527272), (124, 162263636), (248, 81131818), (263, 76504528), (496, 40565909), (526, 38252264), (1052, 19126132), (2104, 9563066), (4208, 4781533), (8153, 2467888), (16306, 1233944), (32612, 616972), (65224, 308486), (130448, 154243)]