261995000

素因数分解:

$2^3\times 5^4\times {\mathrm{61}}^1\times {\mathrm{859}}^1$

素因数の和:946

約数の個数: 80

約数和(自身を含む): 624643800

約数和(自身を除く): 362648800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 125, 200, 244, 250, 305, 488, 500, 610, 625, 859, 1000, 1220, 1250, 1525, 1718, 2440, 2500, 3050, 3436, 4295, 5000, 6100, 6872, 7625, 8590, 12200, 15250, 17180, 21475, 30500, 34360, 38125, 42950, 52399, 61000, 76250, 85900, 104798, 107375, 152500, 171800, 209596, 214750, 261995, 305000, 419192, 429500, 523990, 536875, 859000, 1047980, 1073750, 1309975, 2095960, 2147500, 2619950, 4295000, 5239900, 6549875, 10479800, 13099750, 26199500, 32749375, 52399000, 65498750, 130997500, 261995000]

約数ペア:

[(1, 261995000), (2, 130997500), (4, 65498750), (5, 52399000), (8, 32749375), (10, 26199500), (20, 13099750), (25, 10479800), (40, 6549875), (50, 5239900), (61, 4295000), (100, 2619950), (122, 2147500), (125, 2095960), (200, 1309975), (244, 1073750), (250, 1047980), (305, 859000), (488, 536875), (500, 523990), (610, 429500), (625, 419192), (859, 305000), (1000, 261995), (1220, 214750), (1250, 209596), (1525, 171800), (1718, 152500), (2440, 107375), (2500, 104798), (3050, 85900), (3436, 76250), (4295, 61000), (5000, 52399), (6100, 42950), (6872, 38125), (7625, 34360), (8590, 30500), (12200, 21475), (15250, 17180)]