990604120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2251373}}^1$

素因数の和:2251395

約数の個数: 32

約数和(自身を含む): 2431483920

約数和(自身を除く): 1440879800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 2251373, 4502746, 9005492, 11256865, 18010984, 22513730, 24765103, 45027460, 49530206, 90054920, 99060412, 123825515, 198120824, 247651030, 495302060, 990604120]

約数ペア:

[(1, 990604120), (2, 495302060), (4, 247651030), (5, 198120824), (8, 123825515), (10, 99060412), (11, 90054920), (20, 49530206), (22, 45027460), (40, 24765103), (44, 22513730), (55, 18010984), (88, 11256865), (110, 9005492), (220, 4502746), (440, 2251373)]