18438280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{65851}}^1$

素因数の和:65869

約数の個数: 32

約数和(自身を含む): 47413440

約数和(自身を除く): 28975160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 65851, 131702, 263404, 329255, 460957, 526808, 658510, 921914, 1317020, 1843828, 2304785, 2634040, 3687656, 4609570, 9219140, 18438280]

約数ペア:

[(1, 18438280), (2, 9219140), (4, 4609570), (5, 3687656), (7, 2634040), (8, 2304785), (10, 1843828), (14, 1317020), (20, 921914), (28, 658510), (35, 526808), (40, 460957), (56, 329255), (70, 263404), (140, 131702), (280, 65851)]