19902589

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2237}}^1$

素因数の和:2316

約数の個数: 16

約数和(自身を含む): 24062976

約数和(自身を除く): 4160387

約数列:

[1, 7, 31, 41, 217, 287, 1271, 2237, 8897, 15659, 69347, 91717, 485429, 642019, 2843227, 19902589]

約数ペア:

[(1, 19902589), (7, 2843227), (31, 642019), (41, 485429), (217, 91717), (287, 69347), (1271, 15659), (2237, 8897)]