20691418

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{839}}^1$

素因数の和:930

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15596582

約数列:

[1, 2, 11, 19, 22, 38, 59, 118, 209, 418, 649, 839, 1121, 1298, 1678, 2242, 9229, 12331, 15941, 18458, 24662, 31882, 49501, 99002, 175351, 350702, 544511, 940519, 1089022, 1881038, 10345709, 20691418]

約数ペア:

[(1, 20691418), (2, 10345709), (11, 1881038), (19, 1089022), (22, 940519), (38, 544511), (59, 350702), (118, 175351), (209, 99002), (418, 49501), (649, 31882), (839, 24662), (1121, 18458), (1298, 15941), (1678, 12331), (2242, 9229)]