20504845

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 27141120

約数和(自身を除く): 6636275

約数列:

[1, 5, 23, 37, 61, 79, 115, 185, 305, 395, 851, 1403, 1817, 2257, 2923, 4255, 4819, 7015, 9085, 11285, 14615, 24095, 51911, 67229, 110837, 178303, 259555, 336145, 554185, 891515, 4100969, 20504845]

約数ペア:

[(1, 20504845), (5, 4100969), (23, 891515), (37, 554185), (61, 336145), (79, 259555), (115, 178303), (185, 110837), (305, 67229), (395, 51911), (851, 24095), (1403, 14615), (1817, 11285), (2257, 9085), (2923, 7015), (4255, 4819)]