19837400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:225

約数の個数: 96

約数和(自身を含む): 51425280

約数和(自身を除く): 31587880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 71, 88, 100, 110, 127, 142, 200, 220, 254, 275, 284, 355, 440, 508, 550, 568, 635, 710, 781, 1016, 1100, 1270, 1397, 1420, 1562, 1775, 2200, 2540, 2794, 2840, 3124, 3175, 3550, 3905, 5080, 5588, 6248, 6350, 6985, 7100, 7810, 9017, 11176, 12700, 13970, 14200, 15620, 18034, 19525, 25400, 27940, 31240, 34925, 36068, 39050, 45085, 55880, 69850, 72136, 78100, 90170, 99187, 139700, 156200, 180340, 198374, 225425, 279400, 360680, 396748, 450850, 495935, 793496, 901700, 991870, 1803400, 1983740, 2479675, 3967480, 4959350, 9918700, 19837400]

約数ペア:

[(1, 19837400), (2, 9918700), (4, 4959350), (5, 3967480), (8, 2479675), (10, 1983740), (11, 1803400), (20, 991870), (22, 901700), (25, 793496), (40, 495935), (44, 450850), (50, 396748), (55, 360680), (71, 279400), (88, 225425), (100, 198374), (110, 180340), (127, 156200), (142, 139700), (200, 99187), (220, 90170), (254, 78100), (275, 72136), (284, 69850), (355, 55880), (440, 45085), (508, 39050), (550, 36068), (568, 34925), (635, 31240), (710, 27940), (781, 25400), (1016, 19525), (1100, 18034), (1270, 15620), (1397, 14200), (1420, 13970), (1562, 12700), (1775, 11176), (2200, 9017), (2540, 7810), (2794, 7100), (2840, 6985), (3124, 6350), (3175, 6248), (3550, 5588), (3905, 5080)]