18949775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{293}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 25519200

約数和(自身を除く): 6569425

約数列:

[1, 5, 13, 25, 65, 199, 293, 325, 995, 1465, 2587, 3809, 4975, 7325, 12935, 19045, 58307, 64675, 95225, 291535, 757991, 1457675, 3789955, 18949775]

約数ペア:

[(1, 18949775), (5, 3789955), (13, 1457675), (25, 757991), (65, 291535), (199, 95225), (293, 64675), (325, 58307), (995, 19045), (1465, 12935), (2587, 7325), (3809, 4975)]