257970447

素因数分解:

$3^3\times 7^2\times {\mathrm{194989}}^1$

素因数の和:195012

約数の個数: 24

約数和(自身を含む): 444577200

約数和(自身を除く): 186606753

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 194989, 584967, 1364923, 1754901, 4094769, 5264703, 9554461, 12284307, 28663383, 36852921, 85990149, 257970447]

約数ペア:

[(1, 257970447), (3, 85990149), (7, 36852921), (9, 28663383), (21, 12284307), (27, 9554461), (49, 5264703), (63, 4094769), (147, 1754901), (189, 1364923), (441, 584967), (1323, 194989)]