20998450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{523}}^1$

素因数の和:619

約数の個数: 48

約数和(自身を含む): 43274016

約数和(自身を除く): 22275566

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 73, 110, 146, 275, 365, 523, 550, 730, 803, 1046, 1606, 1825, 2615, 3650, 4015, 5230, 5753, 8030, 11506, 13075, 20075, 26150, 28765, 38179, 40150, 57530, 76358, 143825, 190895, 287650, 381790, 419969, 839938, 954475, 1908950, 2099845, 4199690, 10499225, 20998450]

約数ペア:

[(1, 20998450), (2, 10499225), (5, 4199690), (10, 2099845), (11, 1908950), (22, 954475), (25, 839938), (50, 419969), (55, 381790), (73, 287650), (110, 190895), (146, 143825), (275, 76358), (365, 57530), (523, 40150), (550, 38179), (730, 28765), (803, 26150), (1046, 20075), (1606, 13075), (1825, 11506), (2615, 8030), (3650, 5753), (4015, 5230)]