19865115

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 37537920

約数和(自身を除く): 17672805

約数列:

[1, 3, 5, 9, 15, 27, 37, 41, 45, 97, 111, 123, 135, 185, 205, 291, 333, 369, 485, 555, 615, 873, 999, 1107, 1455, 1517, 1665, 1845, 2619, 3589, 3977, 4365, 4551, 4995, 5535, 7585, 10767, 11931, 13095, 13653, 17945, 19885, 22755, 32301, 35793, 40959, 53835, 59655, 68265, 96903, 107379, 147149, 161505, 178965, 204795, 441447, 484515, 536895, 735745, 1324341, 2207235, 3973023, 6621705, 19865115]

約数ペア:

[(1, 19865115), (3, 6621705), (5, 3973023), (9, 2207235), (15, 1324341), (27, 735745), (37, 536895), (41, 484515), (45, 441447), (97, 204795), (111, 178965), (123, 161505), (135, 147149), (185, 107379), (205, 96903), (291, 68265), (333, 59655), (369, 53835), (485, 40959), (555, 35793), (615, 32301), (873, 22755), (999, 19885), (1107, 17945), (1455, 13653), (1517, 13095), (1665, 11931), (1845, 10767), (2619, 7585), (3589, 5535), (3977, 4995), (4365, 4551)]