21227855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13309}}^1$

素因数の和:13354

約数の個数: 16

約数和(自身を含む): 28749600

約数和(自身を除く): 7521745

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13309, 66545, 146399, 385961, 731995, 1929805, 4245571, 21227855]

約数ペア:

[(1, 21227855), (5, 4245571), (11, 1929805), (29, 731995), (55, 385961), (145, 146399), (319, 66545), (1595, 13309)]