20452020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20051}}^1$

素因数の和:20080

約数の個数: 48

約数和(自身を含む): 60637248

約数和(自身を除く): 40185228

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20051, 40102, 60153, 80204, 100255, 120306, 200510, 240612, 300765, 340867, 401020, 601530, 681734, 1022601, 1203060, 1363468, 1704335, 2045202, 3408670, 4090404, 5113005, 6817340, 10226010, 20452020]

約数ペア:

[(1, 20452020), (2, 10226010), (3, 6817340), (4, 5113005), (5, 4090404), (6, 3408670), (10, 2045202), (12, 1704335), (15, 1363468), (17, 1203060), (20, 1022601), (30, 681734), (34, 601530), (51, 401020), (60, 340867), (68, 300765), (85, 240612), (102, 200510), (170, 120306), (204, 100255), (255, 80204), (340, 60153), (510, 40102), (1020, 20051)]