19688013

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{241}}^1\times {\mathrm{313}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 29635320

約数和(自身を除く): 9947307

約数列:

[1, 3, 9, 29, 87, 241, 261, 313, 723, 939, 2169, 2817, 6989, 9077, 20967, 27231, 62901, 75433, 81693, 226299, 678897, 2187557, 6562671, 19688013]

約数ペア:

[(1, 19688013), (3, 6562671), (9, 2187557), (29, 678897), (87, 226299), (241, 81693), (261, 75433), (313, 62901), (723, 27231), (939, 20967), (2169, 9077), (2817, 6989)]