20408318

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1051}}^1$

素因数の和:1152

約数の個数: 32

約数和(自身を含む): 37367040

約数和(自身を除く): 16958722

約数列:

[1, 2, 7, 14, 19, 38, 73, 133, 146, 266, 511, 1022, 1051, 1387, 2102, 2774, 7357, 9709, 14714, 19418, 19969, 39938, 76723, 139783, 153446, 279566, 537061, 1074122, 1457737, 2915474, 10204159, 20408318]

約数ペア:

[(1, 20408318), (2, 10204159), (7, 2915474), (14, 1457737), (19, 1074122), (38, 537061), (73, 279566), (133, 153446), (146, 139783), (266, 76723), (511, 39938), (1022, 19969), (1051, 19418), (1387, 14714), (2102, 9709), (2774, 7357)]