664860021

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{16481}}^1$

素因数の和:16621

約数の個数: 32

約数和(自身を含む): 1082274048

約数和(自身を除く): 417414027

約数列:

[1, 3, 7, 17, 21, 51, 113, 119, 339, 357, 791, 1921, 2373, 5763, 13447, 16481, 40341, 49443, 115367, 280177, 346101, 840531, 1862353, 1961239, 5587059, 5883717, 13036471, 31660001, 39109413, 94980003, 221620007, 664860021]

約数ペア:

[(1, 664860021), (3, 221620007), (7, 94980003), (17, 39109413), (21, 31660001), (51, 13036471), (113, 5883717), (119, 5587059), (339, 1961239), (357, 1862353), (791, 840531), (1921, 346101), (2373, 280177), (5763, 115367), (13447, 49443), (16481, 40341)]