20884455

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{251}}^1$

素因数の和:348

約数の個数: 36

約数和(自身を含む): 37208808

約数和(自身を除く): 16324353

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 251, 387, 645, 753, 1255, 1849, 1935, 2259, 3765, 5547, 9245, 10793, 11295, 16641, 27735, 32379, 53965, 83205, 97137, 161895, 464099, 485685, 1392297, 2320495, 4176891, 6961485, 20884455]

約数ペア:

[(1, 20884455), (3, 6961485), (5, 4176891), (9, 2320495), (15, 1392297), (43, 485685), (45, 464099), (129, 161895), (215, 97137), (251, 83205), (387, 53965), (645, 32379), (753, 27735), (1255, 16641), (1849, 11295), (1935, 10793), (2259, 9245), (3765, 5547)]