2642140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 6199200

約数和(自身を除く): 3557060

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 409, 646, 818, 1292, 1615, 1636, 2045, 3230, 4090, 6460, 6953, 7771, 8180, 13906, 15542, 27812, 31084, 34765, 38855, 69530, 77710, 132107, 139060, 155420, 264214, 528428, 660535, 1321070, 2642140]

約数ペア:

[(1, 2642140), (2, 1321070), (4, 660535), (5, 528428), (10, 264214), (17, 155420), (19, 139060), (20, 132107), (34, 77710), (38, 69530), (68, 38855), (76, 34765), (85, 31084), (95, 27812), (170, 15542), (190, 13906), (323, 8180), (340, 7771), (380, 6953), (409, 6460), (646, 4090), (818, 3230), (1292, 2045), (1615, 1636)]