21915919870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{168583999}}^1$

素因数の和:168584019

約数の個数: 16

約数和(自身を含む): 42483168000

約数和(自身を除く): 20567248130

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 168583999, 337167998, 842919995, 1685839990, 2191591987, 4383183974, 10957959935, 21915919870]

約数ペア:

[(1, 21915919870), (2, 10957959935), (5, 4383183974), (10, 2191591987), (13, 1685839990), (26, 842919995), (65, 337167998), (130, 168583999)]