20990444

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{13421}}^1$

素因数の和:13465

約数の個数: 24

約数和(自身を含む): 40588128

約数和(自身を除く): 19597684

約数列:

[1, 2, 4, 17, 23, 34, 46, 68, 92, 391, 782, 1564, 13421, 26842, 53684, 228157, 308683, 456314, 617366, 912628, 1234732, 5247611, 10495222, 20990444]

約数ペア:

[(1, 20990444), (2, 10495222), (4, 5247611), (17, 1234732), (23, 912628), (34, 617366), (46, 456314), (68, 308683), (92, 228157), (391, 53684), (782, 26842), (1564, 13421)]