20417320

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{947}}^1$

素因数の和:983

約数の個数: 96

約数和(自身を含む): 58358880

約数和(自身を除く): 37941560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 140, 154, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 616, 770, 947, 980, 1078, 1540, 1894, 1960, 2156, 2695, 3080, 3788, 4312, 4735, 5390, 6629, 7576, 9470, 10417, 10780, 13258, 18940, 20834, 21560, 26516, 33145, 37880, 41668, 46403, 52085, 53032, 66290, 72919, 83336, 92806, 104170, 132580, 145838, 185612, 208340, 232015, 265160, 291676, 364595, 371224, 416680, 464030, 510433, 583352, 729190, 928060, 1020866, 1458380, 1856120, 2041732, 2552165, 2916760, 4083464, 5104330, 10208660, 20417320]

約数ペア:

[(1, 20417320), (2, 10208660), (4, 5104330), (5, 4083464), (7, 2916760), (8, 2552165), (10, 2041732), (11, 1856120), (14, 1458380), (20, 1020866), (22, 928060), (28, 729190), (35, 583352), (40, 510433), (44, 464030), (49, 416680), (55, 371224), (56, 364595), (70, 291676), (77, 265160), (88, 232015), (98, 208340), (110, 185612), (140, 145838), (154, 132580), (196, 104170), (220, 92806), (245, 83336), (280, 72919), (308, 66290), (385, 53032), (392, 52085), (440, 46403), (490, 41668), (539, 37880), (616, 33145), (770, 26516), (947, 21560), (980, 20834), (1078, 18940), (1540, 13258), (1894, 10780), (1960, 10417), (2156, 9470), (2695, 7576), (3080, 6629), (3788, 5390), (4312, 4735)]