20157808

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2161}}^1$

素因数の和:2233

約数の個数: 40

約数和(自身を含む): 43430256

約数和(自身を除く): 23272448

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 53, 88, 106, 176, 212, 424, 583, 848, 1166, 2161, 2332, 4322, 4664, 8644, 9328, 17288, 23771, 34576, 47542, 95084, 114533, 190168, 229066, 380336, 458132, 916264, 1259863, 1832528, 2519726, 5039452, 10078904, 20157808]

約数ペア:

[(1, 20157808), (2, 10078904), (4, 5039452), (8, 2519726), (11, 1832528), (16, 1259863), (22, 916264), (44, 458132), (53, 380336), (88, 229066), (106, 190168), (176, 114533), (212, 95084), (424, 47542), (583, 34576), (848, 23771), (1166, 17288), (2161, 9328), (2332, 8644), (4322, 4664)]