21037160

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30937}}^1$

素因数の和:30965

約数の個数: 32

約数和(自身を含む): 50119560

約数和(自身を除く): 29082400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30937, 61874, 123748, 154685, 247496, 309370, 525929, 618740, 1051858, 1237480, 2103716, 2629645, 4207432, 5259290, 10518580, 21037160]

約数ペア:

[(1, 21037160), (2, 10518580), (4, 5259290), (5, 4207432), (8, 2629645), (10, 2103716), (17, 1237480), (20, 1051858), (34, 618740), (40, 525929), (68, 309370), (85, 247496), (136, 154685), (170, 123748), (340, 61874), (680, 30937)]