78996780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{709}}^1$

素因数の和:1343

約数の個数: 72

約数和(自身を含む): 240349200

約数和(自身を除く): 161352420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 619, 709, 1238, 1418, 1857, 2127, 2476, 2836, 3095, 3545, 3714, 4254, 5571, 6190, 6381, 7090, 7428, 8508, 9285, 10635, 11142, 12380, 12762, 14180, 18570, 21270, 22284, 25524, 27855, 31905, 37140, 42540, 55710, 63810, 111420, 127620, 438871, 877742, 1316613, 1755484, 2194355, 2633226, 3949839, 4388710, 5266452, 6583065, 7899678, 8777420, 13166130, 15799356, 19749195, 26332260, 39498390, 78996780]

約数ペア:

[(1, 78996780), (2, 39498390), (3, 26332260), (4, 19749195), (5, 15799356), (6, 13166130), (9, 8777420), (10, 7899678), (12, 6583065), (15, 5266452), (18, 4388710), (20, 3949839), (30, 2633226), (36, 2194355), (45, 1755484), (60, 1316613), (90, 877742), (180, 438871), (619, 127620), (709, 111420), (1238, 63810), (1418, 55710), (1857, 42540), (2127, 37140), (2476, 31905), (2836, 27855), (3095, 25524), (3545, 22284), (3714, 21270), (4254, 18570), (5571, 14180), (6190, 12762), (6381, 12380), (7090, 11142), (7428, 10635), (8508, 9285)]