257908090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{123401}}^1$

素因数の和:123438

約数の個数: 32

約数和(自身を含む): 533096640

約数和(自身を除く): 275188550

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 123401, 246802, 617005, 1234010, 1357411, 2344619, 2714822, 4689238, 6787055, 11723095, 13574110, 23446190, 25790809, 51581618, 128954045, 257908090]

約数ペア:

[(1, 257908090), (2, 128954045), (5, 51581618), (10, 25790809), (11, 23446190), (19, 13574110), (22, 11723095), (38, 6787055), (55, 4689238), (95, 2714822), (110, 2344619), (190, 1357411), (209, 1234010), (418, 617005), (1045, 246802), (2090, 123401)]