20843416

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 44906400

約数和(自身を除く): 24062984

約数列:

[1, 2, 4, 8, 11, 22, 41, 44, 53, 82, 88, 106, 109, 164, 212, 218, 328, 424, 436, 451, 583, 872, 902, 1166, 1199, 1804, 2173, 2332, 2398, 3608, 4346, 4469, 4664, 4796, 5777, 8692, 8938, 9592, 11554, 17384, 17876, 23108, 23903, 35752, 46216, 47806, 49159, 63547, 95612, 98318, 127094, 191224, 196636, 236857, 254188, 393272, 473714, 508376, 947428, 1894856, 2605427, 5210854, 10421708, 20843416]

約数ペア:

[(1, 20843416), (2, 10421708), (4, 5210854), (8, 2605427), (11, 1894856), (22, 947428), (41, 508376), (44, 473714), (53, 393272), (82, 254188), (88, 236857), (106, 196636), (109, 191224), (164, 127094), (212, 98318), (218, 95612), (328, 63547), (424, 49159), (436, 47806), (451, 46216), (583, 35752), (872, 23903), (902, 23108), (1166, 17876), (1199, 17384), (1804, 11554), (2173, 9592), (2332, 8938), (2398, 8692), (3608, 5777), (4346, 4796), (4469, 4664)]