20280788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{4079}}^1$

素因数の和:4207

約数の個数: 24

約数和(自身を含む): 39070080

約数和(自身を除く): 18789292

約数列:

[1, 2, 4, 11, 22, 44, 113, 226, 452, 1243, 2486, 4079, 4972, 8158, 16316, 44869, 89738, 179476, 460927, 921854, 1843708, 5070197, 10140394, 20280788]

約数ペア:

[(1, 20280788), (2, 10140394), (4, 5070197), (11, 1843708), (22, 921854), (44, 460927), (113, 179476), (226, 89738), (452, 44869), (1243, 16316), (2486, 8158), (4079, 4972)]