840804968

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{647}}^1\times {\mathrm{2663}}^1$

素因数の和:3377

約数の個数: 32

約数和(自身を含む): 1605432960

約数和(自身を除く): 764627992

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 647, 1294, 2588, 2663, 5176, 5326, 10652, 21304, 39467, 78934, 157868, 162443, 315736, 324886, 649772, 1299544, 1722961, 3445922, 6891844, 13783688, 105100621, 210201242, 420402484, 840804968]

約数ペア:

[(1, 840804968), (2, 420402484), (4, 210201242), (8, 105100621), (61, 13783688), (122, 6891844), (244, 3445922), (488, 1722961), (647, 1299544), (1294, 649772), (2588, 324886), (2663, 315736), (5176, 162443), (5326, 157868), (10652, 78934), (21304, 39467)]