21003988

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{1499}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 38304000

約数和(自身を除く): 17300012

約数列:

[1, 2, 4, 31, 62, 113, 124, 226, 452, 1499, 2998, 3503, 5996, 7006, 14012, 46469, 92938, 169387, 185876, 338774, 677548, 5250997, 10501994, 21003988]

約数ペア:

[(1, 21003988), (2, 10501994), (4, 5250997), (31, 677548), (62, 338774), (113, 185876), (124, 169387), (226, 92938), (452, 46469), (1499, 14012), (2998, 7006), (3503, 5996)]