256804005

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{563}}^1\times {\mathrm{647}}^1$

素因数の和:1265

約数の個数: 32

約数和(自身を含む): 421023744

約数和(自身を除く): 164219739

約数列:

[1, 3, 5, 15, 47, 141, 235, 563, 647, 705, 1689, 1941, 2815, 3235, 8445, 9705, 26461, 30409, 79383, 91227, 132305, 152045, 364261, 396915, 456135, 1092783, 1821305, 5463915, 17120267, 51360801, 85601335, 256804005]

約数ペア:

[(1, 256804005), (3, 85601335), (5, 51360801), (15, 17120267), (47, 5463915), (141, 1821305), (235, 1092783), (563, 456135), (647, 396915), (705, 364261), (1689, 152045), (1941, 132305), (2815, 91227), (3235, 79383), (8445, 30409), (9705, 26461)]