131816825

素因数分解:

$5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{103}}^2$

素因数の和:294

約数の個数: 36

約数和(自身を含む): 191291328

約数和(自身を除く): 59474503

約数列:

[1, 5, 7, 25, 35, 71, 103, 175, 355, 497, 515, 721, 1775, 2485, 2575, 3605, 7313, 10609, 12425, 18025, 36565, 51191, 53045, 74263, 182825, 255955, 265225, 371315, 753239, 1279775, 1856575, 3766195, 5272673, 18830975, 26363365, 131816825]

約数ペア:

[(1, 131816825), (5, 26363365), (7, 18830975), (25, 5272673), (35, 3766195), (71, 1856575), (103, 1279775), (175, 753239), (355, 371315), (497, 265225), (515, 255955), (721, 182825), (1775, 74263), (2485, 53045), (2575, 51191), (3605, 36565), (7313, 18025), (10609, 12425)]