19788440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2437}}^1$

素因数の和:2484

約数の個数: 64

約数和(自身を含む): 52660800

約数和(自身を除く): 32872360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2437, 4060, 4874, 8120, 9748, 12185, 17059, 19496, 24370, 34118, 48740, 68236, 70673, 85295, 97480, 136472, 141346, 170590, 282692, 341180, 353365, 494711, 565384, 682360, 706730, 989422, 1413460, 1978844, 2473555, 2826920, 3957688, 4947110, 9894220, 19788440]

約数ペア:

[(1, 19788440), (2, 9894220), (4, 4947110), (5, 3957688), (7, 2826920), (8, 2473555), (10, 1978844), (14, 1413460), (20, 989422), (28, 706730), (29, 682360), (35, 565384), (40, 494711), (56, 353365), (58, 341180), (70, 282692), (116, 170590), (140, 141346), (145, 136472), (203, 97480), (232, 85295), (280, 70673), (290, 68236), (406, 48740), (580, 34118), (812, 24370), (1015, 19496), (1160, 17059), (1624, 12185), (2030, 9748), (2437, 8120), (4060, 4874)]