21285871

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 23500800

約数和(自身を除く): 2214929

約数列:

[1, 19, 31, 71, 509, 589, 1349, 2201, 9671, 15779, 36139, 41819, 299801, 686641, 1120309, 21285871]

約数ペア:

[(1, 21285871), (19, 1120309), (31, 686641), (71, 299801), (509, 41819), (589, 36139), (1349, 15779), (2201, 9671)]