256927400

素因数分解:

$2^3\times 5^2\times {\mathrm{197}}^1\times {\mathrm{6521}}^1$

素因数の和:6734

約数の個数: 48

約数和(自身を含む): 600480540

約数和(自身を除く): 343553140

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 197, 200, 394, 788, 985, 1576, 1970, 3940, 4925, 6521, 7880, 9850, 13042, 19700, 26084, 32605, 39400, 52168, 65210, 130420, 163025, 260840, 326050, 652100, 1284637, 1304200, 2569274, 5138548, 6423185, 10277096, 12846370, 25692740, 32115925, 51385480, 64231850, 128463700, 256927400]

約数ペア:

[(1, 256927400), (2, 128463700), (4, 64231850), (5, 51385480), (8, 32115925), (10, 25692740), (20, 12846370), (25, 10277096), (40, 6423185), (50, 5138548), (100, 2569274), (197, 1304200), (200, 1284637), (394, 652100), (788, 326050), (985, 260840), (1576, 163025), (1970, 130420), (3940, 65210), (4925, 52168), (6521, 39400), (7880, 32605), (9850, 26084), (13042, 19700)]