420021

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:185

約数の個数: 24

約数和(自身を含む): 711360

約数和(自身を除く): 291339

約数列:

[1, 3, 7, 9, 21, 59, 63, 113, 177, 339, 413, 531, 791, 1017, 1239, 2373, 3717, 6667, 7119, 20001, 46669, 60003, 140007, 420021]

約数ペア:

[(1, 420021), (3, 140007), (7, 60003), (9, 46669), (21, 20001), (59, 7119), (63, 6667), (113, 3717), (177, 2373), (339, 1239), (413, 1017), (531, 791)]