65289220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79621}}^1$

素因数の和:79671

約数の個数: 24

約数和(自身を含む): 140453208

約数和(自身を除く): 75163988

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 79621, 159242, 318484, 398105, 796210, 1592420, 3264461, 6528922, 13057844, 16322305, 32644610, 65289220]

約数ペア:

[(1, 65289220), (2, 32644610), (4, 16322305), (5, 13057844), (10, 6528922), (20, 3264461), (41, 1592420), (82, 796210), (164, 398105), (205, 318484), (410, 159242), (820, 79621)]