20265175

素因数分解:

$5^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:328

約数の個数: 36

約数和(自身を含む): 29770416

約数和(自身を除く): 9505241

約数列:

[1, 5, 7, 25, 35, 49, 71, 175, 233, 245, 355, 497, 1165, 1225, 1631, 1775, 2485, 3479, 5825, 8155, 11417, 12425, 16543, 17395, 40775, 57085, 82715, 86975, 115801, 285425, 413575, 579005, 810607, 2895025, 4053035, 20265175]

約数ペア:

[(1, 20265175), (5, 4053035), (7, 2895025), (25, 810607), (35, 579005), (49, 413575), (71, 285425), (175, 115801), (233, 86975), (245, 82715), (355, 57085), (497, 40775), (1165, 17395), (1225, 16543), (1631, 12425), (1775, 11417), (2485, 8155), (3479, 5825)]