20080620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15937}}^1$

素因数の和:15959

約数の個数: 72

約数和(自身を含む): 69617184

約数和(自身を除く): 49536564

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, 15937, 31874, 47811, 63748, 79685, 95622, 111559, 143433, 159370, 191244, 223118, 239055, 286866, 318740, 334677, 446236, 478110, 557795, 573732, 669354, 717165, 956220, 1004031, 1115590, 1338708, 1434330, 1673385, 2008062, 2231180, 2868660, 3346770, 4016124, 5020155, 6693540, 10040310, 20080620]

約数ペア:

[(1, 20080620), (2, 10040310), (3, 6693540), (4, 5020155), (5, 4016124), (6, 3346770), (7, 2868660), (9, 2231180), (10, 2008062), (12, 1673385), (14, 1434330), (15, 1338708), (18, 1115590), (20, 1004031), (21, 956220), (28, 717165), (30, 669354), (35, 573732), (36, 557795), (42, 478110), (45, 446236), (60, 334677), (63, 318740), (70, 286866), (84, 239055), (90, 223118), (105, 191244), (126, 159370), (140, 143433), (180, 111559), (210, 95622), (252, 79685), (315, 63748), (420, 47811), (630, 31874), (1260, 15937)]