20626760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 59754240

約数和(自身を除く): 39127480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 37, 40, 44, 55, 56, 70, 74, 77, 88, 110, 140, 148, 154, 181, 185, 220, 259, 280, 296, 308, 362, 370, 385, 407, 440, 518, 616, 724, 740, 770, 814, 905, 1036, 1267, 1295, 1448, 1480, 1540, 1628, 1810, 1991, 2035, 2072, 2534, 2590, 2849, 3080, 3256, 3620, 3982, 4070, 5068, 5180, 5698, 6335, 6697, 7240, 7964, 8140, 9955, 10136, 10360, 11396, 12670, 13394, 13937, 14245, 15928, 16280, 19910, 22792, 25340, 26788, 27874, 28490, 33485, 39820, 46879, 50680, 53576, 55748, 56980, 66970, 69685, 73667, 79640, 93758, 111496, 113960, 133940, 139370, 147334, 187516, 234395, 267880, 278740, 294668, 368335, 375032, 468790, 515669, 557480, 589336, 736670, 937580, 1031338, 1473340, 1875160, 2062676, 2578345, 2946680, 4125352, 5156690, 10313380, 20626760]

約数ペア:

[(1, 20626760), (2, 10313380), (4, 5156690), (5, 4125352), (7, 2946680), (8, 2578345), (10, 2062676), (11, 1875160), (14, 1473340), (20, 1031338), (22, 937580), (28, 736670), (35, 589336), (37, 557480), (40, 515669), (44, 468790), (55, 375032), (56, 368335), (70, 294668), (74, 278740), (77, 267880), (88, 234395), (110, 187516), (140, 147334), (148, 139370), (154, 133940), (181, 113960), (185, 111496), (220, 93758), (259, 79640), (280, 73667), (296, 69685), (308, 66970), (362, 56980), (370, 55748), (385, 53576), (407, 50680), (440, 46879), (518, 39820), (616, 33485), (724, 28490), (740, 27874), (770, 26788), (814, 25340), (905, 22792), (1036, 19910), (1267, 16280), (1295, 15928), (1448, 14245), (1480, 13937), (1540, 13394), (1628, 12670), (1810, 11396), (1991, 10360), (2035, 10136), (2072, 9955), (2534, 8140), (2590, 7964), (2849, 7240), (3080, 6697), (3256, 6335), (3620, 5698), (3982, 5180), (4070, 5068)]