21298440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{177487}}^1$

素因数の和:177501

約数の個数: 32

約数和(自身を含む): 63895680

約数和(自身を除く): 42597240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 177487, 354974, 532461, 709948, 887435, 1064922, 1419896, 1774870, 2129844, 2662305, 3549740, 4259688, 5324610, 7099480, 10649220, 21298440]

約数ペア:

[(1, 21298440), (2, 10649220), (3, 7099480), (4, 5324610), (5, 4259688), (6, 3549740), (8, 2662305), (10, 2129844), (12, 1774870), (15, 1419896), (20, 1064922), (24, 887435), (30, 709948), (40, 532461), (60, 354974), (120, 177487)]