18873575

素因数分解:

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

素因数の和:133

約数の個数: 48

約数和(自身を含む): 28569600

約数和(自身を除く): 9696025

約数列:

[1, 5, 7, 25, 31, 35, 49, 71, 155, 175, 217, 245, 343, 355, 497, 775, 1085, 1225, 1519, 1715, 1775, 2201, 2485, 3479, 5425, 7595, 8575, 10633, 11005, 12425, 15407, 17395, 24353, 37975, 53165, 55025, 77035, 86975, 107849, 121765, 265825, 385175, 539245, 608825, 754943, 2696225, 3774715, 18873575]

約数ペア:

[(1, 18873575), (5, 3774715), (7, 2696225), (25, 754943), (31, 608825), (35, 539245), (49, 385175), (71, 265825), (155, 121765), (175, 107849), (217, 86975), (245, 77035), (343, 55025), (355, 53165), (497, 37975), (775, 24353), (1085, 17395), (1225, 15407), (1519, 12425), (1715, 11005), (1775, 10633), (2201, 8575), (2485, 7595), (3479, 5425)]