18894785

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{317}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 28207872

約数和(自身を除く): 9313087

約数列:

[1, 5, 7, 13, 35, 65, 91, 131, 317, 455, 655, 917, 1585, 1703, 2219, 4121, 4585, 8515, 11095, 11921, 20605, 28847, 41527, 59605, 144235, 207635, 290689, 539851, 1453445, 2699255, 3778957, 18894785]

約数ペア:

[(1, 18894785), (5, 3778957), (7, 2699255), (13, 1453445), (35, 539851), (65, 290689), (91, 207635), (131, 144235), (317, 59605), (455, 41527), (655, 28847), (917, 20605), (1585, 11921), (1703, 11095), (2219, 8515), (4121, 4585)]