20426945

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3121}}^1$

素因数の和:3161

約数の個数: 32

約数和(自身を含む): 32368896

約数和(自身を除く): 11941951

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3121, 6545, 15605, 21847, 34331, 53057, 109235, 171655, 240317, 265285, 371399, 583627, 1201585, 1856995, 2918135, 4085389, 20426945]

約数ペア:

[(1, 20426945), (5, 4085389), (7, 2918135), (11, 1856995), (17, 1201585), (35, 583627), (55, 371399), (77, 265285), (85, 240317), (119, 171655), (187, 109235), (385, 53057), (595, 34331), (935, 21847), (1309, 15605), (3121, 6545)]