138819620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{1453}}^1$

素因数の和:1760

約数の個数: 48

約数和(自身を含む): 309981168

約数和(自身を除く): 171161548

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 281, 340, 562, 1124, 1405, 1453, 2810, 2906, 4777, 5620, 5812, 7265, 9554, 14530, 19108, 23885, 24701, 29060, 47770, 49402, 95540, 98804, 123505, 247010, 408293, 494020, 816586, 1633172, 2041465, 4082930, 6940981, 8165860, 13881962, 27763924, 34704905, 69409810, 138819620]

約数ペア:

[(1, 138819620), (2, 69409810), (4, 34704905), (5, 27763924), (10, 13881962), (17, 8165860), (20, 6940981), (34, 4082930), (68, 2041465), (85, 1633172), (170, 816586), (281, 494020), (340, 408293), (562, 247010), (1124, 123505), (1405, 98804), (1453, 95540), (2810, 49402), (2906, 47770), (4777, 29060), (5620, 24701), (5812, 23885), (7265, 19108), (9554, 14530)]