28393640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1373}}^1$

素因数の和:1442

約数の個数: 64

約数和(自身を含む): 71228160

約数和(自身を除く): 42834520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 940, 1034, 1373, 1880, 2068, 2585, 2746, 4136, 5170, 5492, 6865, 10340, 10984, 13730, 15103, 20680, 27460, 30206, 54920, 60412, 64531, 75515, 120824, 129062, 151030, 258124, 302060, 322655, 516248, 604120, 645310, 709841, 1290620, 1419682, 2581240, 2839364, 3549205, 5678728, 7098410, 14196820, 28393640]

約数ペア:

[(1, 28393640), (2, 14196820), (4, 7098410), (5, 5678728), (8, 3549205), (10, 2839364), (11, 2581240), (20, 1419682), (22, 1290620), (40, 709841), (44, 645310), (47, 604120), (55, 516248), (88, 322655), (94, 302060), (110, 258124), (188, 151030), (220, 129062), (235, 120824), (376, 75515), (440, 64531), (470, 60412), (517, 54920), (940, 30206), (1034, 27460), (1373, 20680), (1880, 15103), (2068, 13730), (2585, 10984), (2746, 10340), (4136, 6865), (5170, 5492)]