218781721

素因数分解:

${\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{5647}}^1$

素因数の和:5760

約数の個数: 16

約数和(自身を含む): 241553664

約数和(自身を除く): 22771943

約数列:

[1, 17, 43, 53, 731, 901, 2279, 5647, 38743, 95999, 242821, 299291, 4127957, 5087947, 12869513, 218781721]

約数ペア:

[(1, 218781721), (17, 12869513), (43, 5087947), (53, 4127957), (731, 299291), (901, 242821), (2279, 95999), (5647, 38743)]