21305145

素因数分解:

$3^1\times 5^1\times {\mathrm{769}}^1\times {\mathrm{1847}}^1$

素因数の和:2624

約数の個数: 16

約数和(自身を含む): 34151040

約数和(自身を除く): 12845895

約数列:

[1, 3, 5, 15, 769, 1847, 2307, 3845, 5541, 9235, 11535, 27705, 1420343, 4261029, 7101715, 21305145]

約数ペア:

[(1, 21305145), (3, 7101715), (5, 4261029), (15, 1420343), (769, 27705), (1847, 11535), (2307, 9235), (3845, 5541)]