18611920

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2803}}^1$

素因数の和:2899

約数の個数: 40

約数和(自身を含む): 43809696

約数和(自身を除く): 25197776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 2803, 3320, 5606, 6640, 11212, 14015, 22424, 28030, 44848, 56060, 112120, 224240, 232649, 465298, 930596, 1163245, 1861192, 2326490, 3722384, 4652980, 9305960, 18611920]

約数ペア:

[(1, 18611920), (2, 9305960), (4, 4652980), (5, 3722384), (8, 2326490), (10, 1861192), (16, 1163245), (20, 930596), (40, 465298), (80, 232649), (83, 224240), (166, 112120), (332, 56060), (415, 44848), (664, 28030), (830, 22424), (1328, 14015), (1660, 11212), (2803, 6640), (3320, 5606)]