16538220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{661}}^1$

素因数の和:815

約数の個数: 72

約数和(自身を含む): 50603280

約数和(自身を除く): 34065060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 661, 695, 834, 1251, 1322, 1390, 1668, 1983, 2085, 2502, 2644, 2780, 3305, 3966, 4170, 5004, 5949, 6255, 6610, 7932, 8340, 9915, 11898, 12510, 13220, 19830, 23796, 25020, 29745, 39660, 59490, 91879, 118980, 183758, 275637, 367516, 459395, 551274, 826911, 918790, 1102548, 1378185, 1653822, 1837580, 2756370, 3307644, 4134555, 5512740, 8269110, 16538220]

約数ペア:

[(1, 16538220), (2, 8269110), (3, 5512740), (4, 4134555), (5, 3307644), (6, 2756370), (9, 1837580), (10, 1653822), (12, 1378185), (15, 1102548), (18, 918790), (20, 826911), (30, 551274), (36, 459395), (45, 367516), (60, 275637), (90, 183758), (139, 118980), (180, 91879), (278, 59490), (417, 39660), (556, 29745), (661, 25020), (695, 23796), (834, 19830), (1251, 13220), (1322, 12510), (1390, 11898), (1668, 9915), (1983, 8340), (2085, 7932), (2502, 6610), (2644, 6255), (2780, 5949), (3305, 5004), (3966, 4170)]