78905240

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19531}}^1$

素因数の和:19643

約数の個数: 32

約数和(自身を含む): 179303760

約数和(自身を除く): 100398520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 19531, 39062, 78124, 97655, 156248, 195310, 390620, 781240, 1972631, 3945262, 7890524, 9863155, 15781048, 19726310, 39452620, 78905240]

約数ペア:

[(1, 78905240), (2, 39452620), (4, 19726310), (5, 15781048), (8, 9863155), (10, 7890524), (20, 3945262), (40, 1972631), (101, 781240), (202, 390620), (404, 195310), (505, 156248), (808, 97655), (1010, 78124), (2020, 39062), (4040, 19531)]