201863720

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{7873}}^1$

素因数の和:8525

約数の個数: 32

約数和(自身を含む): 454959720

約数和(自身を除く): 253096000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6410, 7873, 12820, 15746, 25640, 31492, 39365, 62984, 78730, 157460, 314920, 5046593, 10093186, 20186372, 25232965, 40372744, 50465930, 100931860, 201863720]

約数ペア:

[(1, 201863720), (2, 100931860), (4, 50465930), (5, 40372744), (8, 25232965), (10, 20186372), (20, 10093186), (40, 5046593), (641, 314920), (1282, 157460), (2564, 78730), (3205, 62984), (5128, 39365), (6410, 31492), (7873, 25640), (12820, 15746)]