70781540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{509}}^1$

素因数の和:944

約数の個数: 48

約数和(自身を含む): 158079600

約数和(自身を除く): 87298060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 409, 509, 818, 1018, 1636, 2036, 2045, 2545, 4090, 5090, 6953, 8180, 8653, 10180, 13906, 17306, 27812, 34612, 34765, 43265, 69530, 86530, 139060, 173060, 208181, 416362, 832724, 1040905, 2081810, 3539077, 4163620, 7078154, 14156308, 17695385, 35390770, 70781540]

約数ペア:

[(1, 70781540), (2, 35390770), (4, 17695385), (5, 14156308), (10, 7078154), (17, 4163620), (20, 3539077), (34, 2081810), (68, 1040905), (85, 832724), (170, 416362), (340, 208181), (409, 173060), (509, 139060), (818, 86530), (1018, 69530), (1636, 43265), (2036, 34765), (2045, 34612), (2545, 27812), (4090, 17306), (5090, 13906), (6953, 10180), (8180, 8653)]