20999524

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1861}}^1$

素因数の和:1916

約数の個数: 48

約数和(自身を含む): 46713856

約数和(自身を除く): 25714332

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 62, 91, 124, 182, 217, 364, 403, 434, 806, 868, 1612, 1861, 2821, 3722, 5642, 7444, 11284, 13027, 24193, 26054, 48386, 52108, 57691, 96772, 115382, 169351, 230764, 338702, 403837, 677404, 749983, 807674, 1499966, 1615348, 2999932, 5249881, 10499762, 20999524]

約数ペア:

[(1, 20999524), (2, 10499762), (4, 5249881), (7, 2999932), (13, 1615348), (14, 1499966), (26, 807674), (28, 749983), (31, 677404), (52, 403837), (62, 338702), (91, 230764), (124, 169351), (182, 115382), (217, 96772), (364, 57691), (403, 52108), (434, 48386), (806, 26054), (868, 24193), (1612, 13027), (1861, 11284), (2821, 7444), (3722, 5642)]