128278843

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{641}}^1$

素因数の和:795

約数の個数: 32

約数和(自身を含む): 168625152

約数和(自身を除く): 40346309

約数列:

[1, 7, 11, 23, 77, 113, 161, 253, 641, 791, 1243, 1771, 2599, 4487, 7051, 8701, 14743, 18193, 28589, 49357, 72433, 103201, 162173, 200123, 507031, 796763, 1135211, 1665959, 5577341, 11661713, 18325549, 128278843]

約数ペア:

[(1, 128278843), (7, 18325549), (11, 11661713), (23, 5577341), (77, 1665959), (113, 1135211), (161, 796763), (253, 507031), (641, 200123), (791, 162173), (1243, 103201), (1771, 72433), (2599, 49357), (4487, 28589), (7051, 18193), (8701, 14743)]