28779255

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 23112585

約数列:

[1, 3, 5, 9, 15, 43, 45, 107, 129, 139, 215, 321, 387, 417, 535, 645, 695, 963, 1251, 1605, 1935, 2085, 4601, 4815, 5977, 6255, 13803, 14873, 17931, 23005, 29885, 41409, 44619, 53793, 69015, 74365, 89655, 133857, 207045, 223095, 268965, 639539, 669285, 1918617, 3197695, 5755851, 9593085, 28779255]

約数ペア:

[(1, 28779255), (3, 9593085), (5, 5755851), (9, 3197695), (15, 1918617), (43, 669285), (45, 639539), (107, 268965), (129, 223095), (139, 207045), (215, 133857), (321, 89655), (387, 74365), (417, 69015), (535, 53793), (645, 44619), (695, 41409), (963, 29885), (1251, 23005), (1605, 17931), (1935, 14873), (2085, 13803), (4601, 6255), (4815, 5977)]