21167131375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{766231}}^1$

素因数の和:766276

約数の個数: 32

約数和(自身を含む): 30122112384

約数和(自身を除く): 8954981009

約数列:

[1, 5, 13, 17, 25, 65, 85, 125, 221, 325, 425, 1105, 1625, 2125, 5525, 27625, 766231, 3831155, 9961003, 13025927, 19155775, 49805015, 65129635, 95778875, 169337051, 249025075, 325648175, 846685255, 1245125375, 1628240875, 4233426275, 21167131375]

約数ペア:

[(1, 21167131375), (5, 4233426275), (13, 1628240875), (17, 1245125375), (25, 846685255), (65, 325648175), (85, 249025075), (125, 169337051), (221, 95778875), (325, 65129635), (425, 49805015), (1105, 19155775), (1625, 13025927), (2125, 9961003), (5525, 3831155), (27625, 766231)]