109808840

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{4243}}^1$

素因数の和:4901

約数の個数: 32

約数和(自身を含む): 247510080

約数和(自身を除く): 137701240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 4243, 5176, 6470, 8486, 12940, 16972, 21215, 25880, 33944, 42430, 84860, 169720, 2745221, 5490442, 10980884, 13726105, 21961768, 27452210, 54904420, 109808840]

約数ペア:

[(1, 109808840), (2, 54904420), (4, 27452210), (5, 21961768), (8, 13726105), (10, 10980884), (20, 5490442), (40, 2745221), (647, 169720), (1294, 84860), (2588, 42430), (3235, 33944), (4243, 25880), (5176, 21215), (6470, 16972), (8486, 12940)]