21163360

素因数分解:

$2^5\times 5^1\times {\mathrm{349}}^1\times {\mathrm{379}}^1$

素因数の和:743

約数の個数: 48

約数和(自身を含む): 50274000

約数和(自身を除く): 29110640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 349, 379, 698, 758, 1396, 1516, 1745, 1895, 2792, 3032, 3490, 3790, 5584, 6064, 6980, 7580, 11168, 12128, 13960, 15160, 27920, 30320, 55840, 60640, 132271, 264542, 529084, 661355, 1058168, 1322710, 2116336, 2645420, 4232672, 5290840, 10581680, 21163360]

約数ペア:

[(1, 21163360), (2, 10581680), (4, 5290840), (5, 4232672), (8, 2645420), (10, 2116336), (16, 1322710), (20, 1058168), (32, 661355), (40, 529084), (80, 264542), (160, 132271), (349, 60640), (379, 55840), (698, 30320), (758, 27920), (1396, 15160), (1516, 13960), (1745, 12128), (1895, 11168), (2792, 7580), (3032, 6980), (3490, 6064), (3790, 5584)]