641021848

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{1979}}^1\times {\mathrm{2131}}^1$

素因数の和:4135

約数の個数: 32

約数和(自身を含む): 1266408000

約数和(自身を除く): 625386152

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 1979, 2131, 3958, 4262, 7916, 8524, 15832, 17048, 37601, 40489, 75202, 80978, 150404, 161956, 300808, 323912, 4217249, 8434498, 16868996, 33737992, 80127731, 160255462, 320510924, 641021848]

約数ペア:

[(1, 641021848), (2, 320510924), (4, 160255462), (8, 80127731), (19, 33737992), (38, 16868996), (76, 8434498), (152, 4217249), (1979, 323912), (2131, 300808), (3958, 161956), (4262, 150404), (7916, 80978), (8524, 75202), (15832, 40489), (17048, 37601)]