51311000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3947}}^1$

素因数の和:3981

約数の個数: 64

約数和(自身を含む): 129336480

約数和(自身を除く): 78025480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1625, 2600, 3250, 3947, 6500, 7894, 13000, 15788, 19735, 31576, 39470, 51311, 78940, 98675, 102622, 157880, 197350, 205244, 256555, 394700, 410488, 493375, 513110, 789400, 986750, 1026220, 1282775, 1973500, 2052440, 2565550, 3947000, 5131100, 6413875, 10262200, 12827750, 25655500, 51311000]

約数ペア:

[(1, 51311000), (2, 25655500), (4, 12827750), (5, 10262200), (8, 6413875), (10, 5131100), (13, 3947000), (20, 2565550), (25, 2052440), (26, 1973500), (40, 1282775), (50, 1026220), (52, 986750), (65, 789400), (100, 513110), (104, 493375), (125, 410488), (130, 394700), (200, 256555), (250, 205244), (260, 197350), (325, 157880), (500, 102622), (520, 98675), (650, 78940), (1000, 51311), (1300, 39470), (1625, 31576), (2600, 19735), (3250, 15788), (3947, 13000), (6500, 7894)]