19909185

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 32970240

約数和(自身を除く): 13061055

約数列:

[1, 3, 5, 15, 53, 79, 159, 237, 265, 317, 395, 795, 951, 1185, 1585, 4187, 4755, 12561, 16801, 20935, 25043, 50403, 62805, 75129, 84005, 125215, 252015, 375645, 1327279, 3981837, 6636395, 19909185]

約数ペア:

[(1, 19909185), (3, 6636395), (5, 3981837), (15, 1327279), (53, 375645), (79, 252015), (159, 125215), (237, 84005), (265, 75129), (317, 62805), (395, 50403), (795, 25043), (951, 20935), (1185, 16801), (1585, 12561), (4187, 4755)]