209655180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{166393}}^1$

素因数の和:166415

約数の個数: 72

約数和(自身を含む): 726808992

約数和(自身を除く): 517153812

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 166393, 332786, 499179, 665572, 831965, 998358, 1164751, 1497537, 1663930, 1996716, 2329502, 2495895, 2995074, 3327860, 3494253, 4659004, 4991790, 5823755, 5990148, 6988506, 7487685, 9983580, 10482759, 11647510, 13977012, 14975370, 17471265, 20965518, 23295020, 29950740, 34942530, 41931036, 52413795, 69885060, 104827590, 209655180]

約数ペア:

[(1, 209655180), (2, 104827590), (3, 69885060), (4, 52413795), (5, 41931036), (6, 34942530), (7, 29950740), (9, 23295020), (10, 20965518), (12, 17471265), (14, 14975370), (15, 13977012), (18, 11647510), (20, 10482759), (21, 9983580), (28, 7487685), (30, 6988506), (35, 5990148), (36, 5823755), (42, 4991790), (45, 4659004), (60, 3494253), (63, 3327860), (70, 2995074), (84, 2495895), (90, 2329502), (105, 1996716), (126, 1663930), (140, 1497537), (180, 1164751), (210, 998358), (252, 831965), (315, 665572), (420, 499179), (630, 332786), (1260, 166393)]