19981112

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{113}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 40752720

約数和(自身を除く): 20771608

約数列:

[1, 2, 4, 8, 23, 31, 46, 62, 92, 113, 124, 184, 226, 248, 452, 713, 904, 961, 1426, 1922, 2599, 2852, 3503, 3844, 5198, 5704, 7006, 7688, 10396, 14012, 20792, 22103, 28024, 44206, 80569, 88412, 108593, 161138, 176824, 217186, 322276, 434372, 644552, 868744, 2497639, 4995278, 9990556, 19981112]

約数ペア:

[(1, 19981112), (2, 9990556), (4, 4995278), (8, 2497639), (23, 868744), (31, 644552), (46, 434372), (62, 322276), (92, 217186), (113, 176824), (124, 161138), (184, 108593), (226, 88412), (248, 80569), (452, 44206), (713, 28024), (904, 22103), (961, 20792), (1426, 14012), (1922, 10396), (2599, 7688), (2852, 7006), (3503, 5704), (3844, 5198)]