18889255

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 29614464

約数和(自身を除く): 10725209

約数列:

[1, 5, 7, 11, 35, 43, 49, 55, 77, 163, 215, 245, 301, 385, 473, 539, 815, 1141, 1505, 1793, 2107, 2365, 2695, 3311, 5705, 7009, 7987, 8965, 10535, 12551, 16555, 23177, 35045, 39935, 49063, 62755, 77099, 87857, 115885, 245315, 343441, 385495, 439285, 539693, 1717205, 2698465, 3777851, 18889255]

約数ペア:

[(1, 18889255), (5, 3777851), (7, 2698465), (11, 1717205), (35, 539693), (43, 439285), (49, 385495), (55, 343441), (77, 245315), (163, 115885), (215, 87857), (245, 77099), (301, 62755), (385, 49063), (473, 39935), (539, 35045), (815, 23177), (1141, 16555), (1505, 12551), (1793, 10535), (2107, 8965), (2365, 7987), (2695, 7009), (3311, 5705)]