78937960

素因数分解:

$2^3\times 5^1\times {\mathrm{1381}}^1\times {\mathrm{1429}}^1$

素因数の和:2821

約数の個数: 32

約数和(自身を含む): 177863400

約数和(自身を除く): 98925440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1381, 1429, 2762, 2858, 5524, 5716, 6905, 7145, 11048, 11432, 13810, 14290, 27620, 28580, 55240, 57160, 1973449, 3946898, 7893796, 9867245, 15787592, 19734490, 39468980, 78937960]

約数ペア:

[(1, 78937960), (2, 39468980), (4, 19734490), (5, 15787592), (8, 9867245), (10, 7893796), (20, 3946898), (40, 1973449), (1381, 57160), (1429, 55240), (2762, 28580), (2858, 27620), (5524, 14290), (5716, 13810), (6905, 11432), (7145, 11048)]