21796278

素因数分解:

$2^1\times 3^1\times 7^4\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 80

約数和(自身を含む): 54451440

約数和(自身を除く): 32655162

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 49, 51, 89, 98, 102, 119, 147, 178, 238, 267, 294, 343, 357, 534, 623, 686, 714, 833, 1029, 1246, 1513, 1666, 1869, 2058, 2401, 2499, 3026, 3738, 4361, 4539, 4802, 4998, 5831, 7203, 8722, 9078, 10591, 11662, 13083, 14406, 17493, 21182, 26166, 30527, 31773, 34986, 40817, 61054, 63546, 74137, 81634, 91581, 122451, 148274, 183162, 213689, 222411, 244902, 427378, 444822, 518959, 641067, 1037918, 1282134, 1556877, 3113754, 3632713, 7265426, 10898139, 21796278]

約数ペア:

[(1, 21796278), (2, 10898139), (3, 7265426), (6, 3632713), (7, 3113754), (14, 1556877), (17, 1282134), (21, 1037918), (34, 641067), (42, 518959), (49, 444822), (51, 427378), (89, 244902), (98, 222411), (102, 213689), (119, 183162), (147, 148274), (178, 122451), (238, 91581), (267, 81634), (294, 74137), (343, 63546), (357, 61054), (534, 40817), (623, 34986), (686, 31773), (714, 30527), (833, 26166), (1029, 21182), (1246, 17493), (1513, 14406), (1666, 13083), (1869, 11662), (2058, 10591), (2401, 9078), (2499, 8722), (3026, 7203), (3738, 5831), (4361, 4998), (4539, 4802)]