20778016

素因数分解:

$2^5\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:186

約数の個数: 96

約数和(自身を含む): 50561280

約数和(自身を除く): 29783264

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 37, 46, 56, 74, 92, 109, 112, 148, 161, 184, 218, 224, 259, 296, 322, 368, 436, 518, 592, 644, 736, 763, 851, 872, 1036, 1184, 1288, 1526, 1702, 1744, 2072, 2507, 2576, 3052, 3404, 3488, 4033, 4144, 5014, 5152, 5957, 6104, 6808, 8066, 8288, 10028, 11914, 12208, 13616, 16132, 17549, 20056, 23828, 24416, 27232, 28231, 32264, 35098, 40112, 47656, 56462, 64528, 70196, 80224, 92759, 95312, 112924, 129056, 140392, 185518, 190624, 225848, 280784, 371036, 451696, 561568, 649313, 742072, 903392, 1298626, 1484144, 2597252, 2968288, 5194504, 10389008, 20778016]

約数ペア:

[(1, 20778016), (2, 10389008), (4, 5194504), (7, 2968288), (8, 2597252), (14, 1484144), (16, 1298626), (23, 903392), (28, 742072), (32, 649313), (37, 561568), (46, 451696), (56, 371036), (74, 280784), (92, 225848), (109, 190624), (112, 185518), (148, 140392), (161, 129056), (184, 112924), (218, 95312), (224, 92759), (259, 80224), (296, 70196), (322, 64528), (368, 56462), (436, 47656), (518, 40112), (592, 35098), (644, 32264), (736, 28231), (763, 27232), (851, 24416), (872, 23828), (1036, 20056), (1184, 17549), (1288, 16132), (1526, 13616), (1702, 12208), (1744, 11914), (2072, 10028), (2507, 8288), (2576, 8066), (3052, 6808), (3404, 6104), (3488, 5957), (4033, 5152), (4144, 5014)]