13481125

素因数分解:

$5^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:131

約数の個数: 48

約数和(自身を含む): 20487168

約数和(自身を除く): 7006043

約数列:

[1, 5, 7, 25, 31, 35, 49, 71, 125, 155, 175, 217, 245, 355, 497, 775, 875, 1085, 1225, 1519, 1775, 2201, 2485, 3479, 3875, 5425, 6125, 7595, 8875, 11005, 12425, 15407, 17395, 27125, 37975, 55025, 62125, 77035, 86975, 107849, 189875, 275125, 385175, 434875, 539245, 1925875, 2696225, 13481125]

約数ペア:

[(1, 13481125), (5, 2696225), (7, 1925875), (25, 539245), (31, 434875), (35, 385175), (49, 275125), (71, 189875), (125, 107849), (155, 86975), (175, 77035), (217, 62125), (245, 55025), (355, 37975), (497, 27125), (775, 17395), (875, 15407), (1085, 12425), (1225, 11005), (1519, 8875), (1775, 7595), (2201, 6125), (2485, 5425), (3479, 3875)]