12557890

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 23451120

約数和(自身を除く): 10893230

約数列:

[1, 2, 5, 10, 41, 82, 109, 205, 218, 281, 410, 545, 562, 1090, 1405, 2810, 4469, 8938, 11521, 22345, 23042, 30629, 44690, 57605, 61258, 115210, 153145, 306290, 1255789, 2511578, 6278945, 12557890]

約数ペア:

[(1, 12557890), (2, 6278945), (5, 2511578), (10, 1255789), (41, 306290), (82, 153145), (109, 115210), (205, 61258), (218, 57605), (281, 44690), (410, 30629), (545, 23042), (562, 22345), (1090, 11521), (1405, 8938), (2810, 4469)]