4989800

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 11820300

約数和(自身を除く): 6830500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 244, 305, 409, 488, 610, 818, 1220, 1525, 1636, 2045, 2440, 3050, 3272, 4090, 6100, 8180, 10225, 12200, 16360, 20450, 24949, 40900, 49898, 81800, 99796, 124745, 199592, 249490, 498980, 623725, 997960, 1247450, 2494900, 4989800]

約数ペア:

[(1, 4989800), (2, 2494900), (4, 1247450), (5, 997960), (8, 623725), (10, 498980), (20, 249490), (25, 199592), (40, 124745), (50, 99796), (61, 81800), (100, 49898), (122, 40900), (200, 24949), (244, 20450), (305, 16360), (409, 12200), (488, 10225), (610, 8180), (818, 6100), (1220, 4090), (1525, 3272), (1636, 3050), (2045, 2440)]