19890680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29251}}^1$

素因数の和:29279

約数の個数: 32

約数和(自身を含む): 47388240

約数和(自身を除く): 27497560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 29251, 58502, 117004, 146255, 234008, 292510, 497267, 585020, 994534, 1170040, 1989068, 2486335, 3978136, 4972670, 9945340, 19890680]

約数ペア:

[(1, 19890680), (2, 9945340), (4, 4972670), (5, 3978136), (8, 2486335), (10, 1989068), (17, 1170040), (20, 994534), (34, 585020), (40, 497267), (68, 292510), (85, 234008), (136, 146255), (170, 117004), (340, 58502), (680, 29251)]