291220120

素因数分解:

$2^3\times 5^1\times {\mathrm{7280503}}^1$

素因数の和:7280514

約数の個数: 16

約数和(自身を含む): 655245360

約数和(自身を除く): 364025240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7280503, 14561006, 29122012, 36402515, 58244024, 72805030, 145610060, 291220120]

約数ペア:

[(1, 291220120), (2, 145610060), (4, 72805030), (5, 58244024), (8, 36402515), (10, 29122012), (20, 14561006), (40, 7280503)]