20238934000

素因数分解:

$2^4\times 5^3\times {\mathrm{641}}^1\times {\mathrm{15787}}^1$

素因数の和:16451

約数の個数: 80

約数和(自身を含む): 49017193056

約数和(自身を除く): 28778259056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 641, 1000, 1282, 2000, 2564, 3205, 5128, 6410, 10256, 12820, 15787, 16025, 25640, 31574, 32050, 51280, 63148, 64100, 78935, 80125, 126296, 128200, 157870, 160250, 252592, 256400, 315740, 320500, 394675, 631480, 641000, 789350, 1262960, 1282000, 1578700, 1973375, 3157400, 3946750, 6314800, 7893500, 10119467, 15787000, 20238934, 31574000, 40477868, 50597335, 80955736, 101194670, 161911472, 202389340, 252986675, 404778680, 505973350, 809557360, 1011946700, 1264933375, 2023893400, 2529866750, 4047786800, 5059733500, 10119467000, 20238934000]

約数ペア:

[(1, 20238934000), (2, 10119467000), (4, 5059733500), (5, 4047786800), (8, 2529866750), (10, 2023893400), (16, 1264933375), (20, 1011946700), (25, 809557360), (40, 505973350), (50, 404778680), (80, 252986675), (100, 202389340), (125, 161911472), (200, 101194670), (250, 80955736), (400, 50597335), (500, 40477868), (641, 31574000), (1000, 20238934), (1282, 15787000), (2000, 10119467), (2564, 7893500), (3205, 6314800), (5128, 3946750), (6410, 3157400), (10256, 1973375), (12820, 1578700), (15787, 1282000), (16025, 1262960), (25640, 789350), (31574, 641000), (32050, 631480), (51280, 394675), (63148, 320500), (64100, 315740), (78935, 256400), (80125, 252592), (126296, 160250), (128200, 157870)]