21510417

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{1039}}^1$

素因数の和:1212

約数の個数: 16

約数和(自身を含む): 29419520

約数和(自身を除く): 7909103

約数列:

[1, 3, 67, 103, 201, 309, 1039, 3117, 6901, 20703, 69613, 107017, 208839, 321051, 7170139, 21510417]

約数ペア:

[(1, 21510417), (3, 7170139), (67, 321051), (103, 208839), (201, 107017), (309, 69613), (1039, 20703), (3117, 6901)]