19682345

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 25662744

約数和(自身を除く): 5980399

約数列:

[1, 5, 17, 53, 85, 257, 265, 289, 901, 1285, 1445, 4369, 4505, 13621, 15317, 21845, 68105, 74273, 76585, 231557, 371365, 1157785, 3936469, 19682345]

約数ペア:

[(1, 19682345), (5, 3936469), (17, 1157785), (53, 371365), (85, 231557), (257, 76585), (265, 74273), (289, 68105), (901, 21845), (1285, 15317), (1445, 13621), (4369, 4505)]