21281009

素因数分解:

${\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:296

約数の個数: 16

約数和(自身を含む): 22665216

約数和(自身を除く): 1384207

約数列:

[1, 41, 61, 67, 127, 2501, 2747, 4087, 5207, 7747, 8509, 167567, 317627, 348869, 519049, 21281009]

約数ペア:

[(1, 21281009), (41, 519049), (61, 348869), (67, 317627), (127, 167567), (2501, 8509), (2747, 7747), (4087, 5207)]