20724615

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27091}}^1$

素因数の和:27119

約数の個数: 24

約数和(自身を含む): 38037168

約数和(自身を除く): 17312553

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27091, 81273, 135455, 243819, 406365, 460547, 1219095, 1381641, 2302735, 4144923, 6908205, 20724615]

約数ペア:

[(1, 20724615), (3, 6908205), (5, 4144923), (9, 2302735), (15, 1381641), (17, 1219095), (45, 460547), (51, 406365), (85, 243819), (153, 135455), (255, 81273), (765, 27091)]