20908188

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2861}}^1$

素因数の和:2907

約数の個数: 72

約数和(自身を含む): 62506080

約数和(自身を除く): 41597892

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 36, 42, 58, 63, 84, 87, 116, 126, 174, 203, 252, 261, 348, 406, 522, 609, 812, 1044, 1218, 1827, 2436, 2861, 3654, 5722, 7308, 8583, 11444, 17166, 20027, 25749, 34332, 40054, 51498, 60081, 80108, 82969, 102996, 120162, 165938, 180243, 240324, 248907, 331876, 360486, 497814, 580783, 720972, 746721, 995628, 1161566, 1493442, 1742349, 2323132, 2986884, 3484698, 5227047, 6969396, 10454094, 20908188]

約数ペア:

[(1, 20908188), (2, 10454094), (3, 6969396), (4, 5227047), (6, 3484698), (7, 2986884), (9, 2323132), (12, 1742349), (14, 1493442), (18, 1161566), (21, 995628), (28, 746721), (29, 720972), (36, 580783), (42, 497814), (58, 360486), (63, 331876), (84, 248907), (87, 240324), (116, 180243), (126, 165938), (174, 120162), (203, 102996), (252, 82969), (261, 80108), (348, 60081), (406, 51498), (522, 40054), (609, 34332), (812, 25749), (1044, 20027), (1218, 17166), (1827, 11444), (2436, 8583), (2861, 7308), (3654, 5722)]