1645169440

素因数分解:

$2^5\times 5^1\times {\mathrm{509}}^1\times {\mathrm{20201}}^1$

素因数の和:20725

約数の個数: 48

約数和(自身を含む): 3894541560

約数和(自身を除く): 2249372120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 509, 1018, 2036, 2545, 4072, 5090, 8144, 10180, 16288, 20201, 20360, 40402, 40720, 80804, 81440, 101005, 161608, 202010, 323216, 404020, 646432, 808040, 1616080, 3232160, 10282309, 20564618, 41129236, 51411545, 82258472, 102823090, 164516944, 205646180, 329033888, 411292360, 822584720, 1645169440]

約数ペア:

[(1, 1645169440), (2, 822584720), (4, 411292360), (5, 329033888), (8, 205646180), (10, 164516944), (16, 102823090), (20, 82258472), (32, 51411545), (40, 41129236), (80, 20564618), (160, 10282309), (509, 3232160), (1018, 1616080), (2036, 808040), (2545, 646432), (4072, 404020), (5090, 323216), (8144, 202010), (10180, 161608), (16288, 101005), (20201, 81440), (20360, 80804), (40402, 40720)]