78937720

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{10903}}^1$

素因数の和:11095

約数の個数: 32

約数和(自身を含む): 178607520

約数和(自身を除く): 99669800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 10903, 21806, 43612, 54515, 87224, 109030, 218060, 436120, 1973443, 3946886, 7893772, 9867215, 15787544, 19734430, 39468860, 78937720]

約数ペア:

[(1, 78937720), (2, 39468860), (4, 19734430), (5, 15787544), (8, 9867215), (10, 7893772), (20, 3946886), (40, 1973443), (181, 436120), (362, 218060), (724, 109030), (905, 87224), (1448, 54515), (1810, 43612), (3620, 21806), (7240, 10903)]