21155535

素因数分解:

$3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1873}}^1$

素因数の和:2135

約数の個数: 24

約数和(自身を含む): 36835344

約数和(自身を除く): 15679809

約数列:

[1, 3, 5, 9, 15, 45, 251, 753, 1255, 1873, 2259, 3765, 5619, 9365, 11295, 16857, 28095, 84285, 470123, 1410369, 2350615, 4231107, 7051845, 21155535]

約数ペア:

[(1, 21155535), (3, 7051845), (5, 4231107), (9, 2350615), (15, 1410369), (45, 470123), (251, 84285), (753, 28095), (1255, 16857), (1873, 11295), (2259, 9365), (3765, 5619)]