78919020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{438439}}^1$

素因数の和:438454

約数の個数: 36

約数和(自身を含む): 239388240

約数和(自身を除く): 160469220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 438439, 876878, 1315317, 1753756, 2192195, 2630634, 3945951, 4384390, 5261268, 6576585, 7891902, 8768780, 13153170, 15783804, 19729755, 26306340, 39459510, 78919020]

約数ペア:

[(1, 78919020), (2, 39459510), (3, 26306340), (4, 19729755), (5, 15783804), (6, 13153170), (9, 8768780), (10, 7891902), (12, 6576585), (15, 5261268), (18, 4384390), (20, 3945951), (30, 2630634), (36, 2192195), (45, 1753756), (60, 1315317), (90, 876878), (180, 438439)]