19509910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2557}}^1$

素因数の和:2680

約数の個数: 32

約数和(自身を含む): 40518720

約数和(自身を除く): 21008810

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 109, 218, 545, 763, 1090, 1526, 2557, 3815, 5114, 7630, 12785, 17899, 25570, 35798, 89495, 178990, 278713, 557426, 1393565, 1950991, 2787130, 3901982, 9754955, 19509910]

約数ペア:

[(1, 19509910), (2, 9754955), (5, 3901982), (7, 2787130), (10, 1950991), (14, 1393565), (35, 557426), (70, 278713), (109, 178990), (218, 89495), (545, 35798), (763, 25570), (1090, 17899), (1526, 12785), (2557, 7630), (3815, 5114)]