20381508

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2609}}^1$

素因数の和:2657

約数の個数: 72

約数和(自身を含む): 60802560

約数和(自身を除く): 40421052

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 372, 434, 558, 651, 868, 1116, 1302, 1953, 2604, 2609, 3906, 5218, 7812, 7827, 10436, 15654, 18263, 23481, 31308, 36526, 46962, 54789, 73052, 80879, 93924, 109578, 161758, 164367, 219156, 242637, 323516, 328734, 485274, 566153, 657468, 727911, 970548, 1132306, 1455822, 1698459, 2264612, 2911644, 3396918, 5095377, 6793836, 10190754, 20381508]

約数ペア:

[(1, 20381508), (2, 10190754), (3, 6793836), (4, 5095377), (6, 3396918), (7, 2911644), (9, 2264612), (12, 1698459), (14, 1455822), (18, 1132306), (21, 970548), (28, 727911), (31, 657468), (36, 566153), (42, 485274), (62, 328734), (63, 323516), (84, 242637), (93, 219156), (124, 164367), (126, 161758), (186, 109578), (217, 93924), (252, 80879), (279, 73052), (372, 54789), (434, 46962), (558, 36526), (651, 31308), (868, 23481), (1116, 18263), (1302, 15654), (1953, 10436), (2604, 7827), (2609, 7812), (3906, 5218)]