9918920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22543}}^1$

素因数の和:22565

約数の個数: 32

約数和(自身を含む): 24347520

約数和(自身を除く): 14428600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 22543, 45086, 90172, 112715, 180344, 225430, 247973, 450860, 495946, 901720, 991892, 1239865, 1983784, 2479730, 4959460, 9918920]

約数ペア:

[(1, 9918920), (2, 4959460), (4, 2479730), (5, 1983784), (8, 1239865), (10, 991892), (11, 901720), (20, 495946), (22, 450860), (40, 247973), (44, 225430), (55, 180344), (88, 112715), (110, 90172), (220, 45086), (440, 22543)]