721980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{191}}^1$

素因数の和:216

約数の個数: 96

約数和(自身を含む): 2580480

約数和(自身を除く): 1858500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 191, 210, 252, 270, 315, 378, 382, 420, 540, 573, 630, 756, 764, 945, 955, 1146, 1260, 1337, 1719, 1890, 1910, 2292, 2674, 2865, 3438, 3780, 3820, 4011, 5157, 5348, 5730, 6685, 6876, 8022, 8595, 10314, 11460, 12033, 13370, 16044, 17190, 20055, 20628, 24066, 25785, 26740, 34380, 36099, 40110, 48132, 51570, 60165, 72198, 80220, 103140, 120330, 144396, 180495, 240660, 360990, 721980]

約数ペア:

[(1, 721980), (2, 360990), (3, 240660), (4, 180495), (5, 144396), (6, 120330), (7, 103140), (9, 80220), (10, 72198), (12, 60165), (14, 51570), (15, 48132), (18, 40110), (20, 36099), (21, 34380), (27, 26740), (28, 25785), (30, 24066), (35, 20628), (36, 20055), (42, 17190), (45, 16044), (54, 13370), (60, 12033), (63, 11460), (70, 10314), (84, 8595), (90, 8022), (105, 6876), (108, 6685), (126, 5730), (135, 5348), (140, 5157), (180, 4011), (189, 3820), (191, 3780), (210, 3438), (252, 2865), (270, 2674), (315, 2292), (378, 1910), (382, 1890), (420, 1719), (540, 1337), (573, 1260), (630, 1146), (756, 955), (764, 945)]