21561000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{7187}}^1$

素因数の和:7211

約数の個数: 64

約数和(自身を含む): 67279680

約数和(自身を除く): 45718680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 120, 125, 150, 200, 250, 300, 375, 500, 600, 750, 1000, 1500, 3000, 7187, 14374, 21561, 28748, 35935, 43122, 57496, 71870, 86244, 107805, 143740, 172488, 179675, 215610, 287480, 359350, 431220, 539025, 718700, 862440, 898375, 1078050, 1437400, 1796750, 2156100, 2695125, 3593500, 4312200, 5390250, 7187000, 10780500, 21561000]

約数ペア:

[(1, 21561000), (2, 10780500), (3, 7187000), (4, 5390250), (5, 4312200), (6, 3593500), (8, 2695125), (10, 2156100), (12, 1796750), (15, 1437400), (20, 1078050), (24, 898375), (25, 862440), (30, 718700), (40, 539025), (50, 431220), (60, 359350), (75, 287480), (100, 215610), (120, 179675), (125, 172488), (150, 143740), (200, 107805), (250, 86244), (300, 71870), (375, 57496), (500, 43122), (600, 35935), (750, 28748), (1000, 21561), (1500, 14374), (3000, 7187)]