20641712

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14177}}^1$

素因数の和:14205

約数の個数: 40

約数和(自身を含む): 49226016

約数和(自身を除く): 28584304

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14177, 28354, 56708, 99239, 113416, 184301, 198478, 226832, 368602, 396956, 737204, 793912, 1290107, 1474408, 1587824, 2580214, 2948816, 5160428, 10320856, 20641712]

約数ペア:

[(1, 20641712), (2, 10320856), (4, 5160428), (7, 2948816), (8, 2580214), (13, 1587824), (14, 1474408), (16, 1290107), (26, 793912), (28, 737204), (52, 396956), (56, 368602), (91, 226832), (104, 198478), (112, 184301), (182, 113416), (208, 99239), (364, 56708), (728, 28354), (1456, 14177)]