20199990123

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{661}}^1\times {\mathrm{91771}}^1$

素因数の和:92475

約数の個数: 24

約数和(自身を含む): 30012013616

約数和(自身を除く): 9812023493

約数列:

[1, 3, 9, 37, 111, 333, 661, 1983, 5949, 24457, 73371, 91771, 220113, 275313, 825939, 3395527, 10186581, 30559743, 60660631, 181981893, 545945679, 2244443347, 6733330041, 20199990123]

約数ペア:

[(1, 20199990123), (3, 6733330041), (9, 2244443347), (37, 545945679), (111, 181981893), (333, 60660631), (661, 30559743), (1983, 10186581), (5949, 3395527), (24457, 825939), (73371, 275313), (91771, 220113)]