20119120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{971}}^1$

素因数の和:1028

約数の個数: 80

約数和(自身を含む): 54960768

約数和(自身を除く): 34841648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 740, 971, 1036, 1295, 1480, 1942, 2072, 2590, 2960, 3884, 4144, 4855, 5180, 6797, 7768, 9710, 10360, 13594, 15536, 19420, 20720, 27188, 33985, 35927, 38840, 54376, 67970, 71854, 77680, 108752, 135940, 143708, 179635, 251489, 271880, 287416, 359270, 502978, 543760, 574832, 718540, 1005956, 1257445, 1437080, 2011912, 2514890, 2874160, 4023824, 5029780, 10059560, 20119120]

約数ペア:

[(1, 20119120), (2, 10059560), (4, 5029780), (5, 4023824), (7, 2874160), (8, 2514890), (10, 2011912), (14, 1437080), (16, 1257445), (20, 1005956), (28, 718540), (35, 574832), (37, 543760), (40, 502978), (56, 359270), (70, 287416), (74, 271880), (80, 251489), (112, 179635), (140, 143708), (148, 135940), (185, 108752), (259, 77680), (280, 71854), (296, 67970), (370, 54376), (518, 38840), (560, 35927), (592, 33985), (740, 27188), (971, 20720), (1036, 19420), (1295, 15536), (1480, 13594), (1942, 10360), (2072, 9710), (2590, 7768), (2960, 6797), (3884, 5180), (4144, 4855)]