21000608655

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1\times {\mathrm{5021}}^1$

素因数の和:5372

約数の個数: 64

約数和(自身を含む): 36751397760

約数和(自身を除く): 15750789105

約数列:

[1, 3, 5, 13, 15, 39, 65, 89, 195, 241, 267, 445, 723, 1157, 1205, 1335, 3133, 3471, 3615, 5021, 5785, 9399, 15063, 15665, 17355, 21449, 25105, 46995, 64347, 65273, 75315, 107245, 195819, 278837, 321735, 326365, 446869, 836511, 979095, 1210061, 1340607, 1394185, 2234345, 3630183, 4182555, 5809297, 6050305, 6703035, 15730793, 17427891, 18150915, 29046485, 47192379, 78653965, 87139455, 107695429, 235961895, 323086287, 538477145, 1400040577, 1615431435, 4200121731, 7000202885, 21000608655]

約数ペア:

[(1, 21000608655), (3, 7000202885), (5, 4200121731), (13, 1615431435), (15, 1400040577), (39, 538477145), (65, 323086287), (89, 235961895), (195, 107695429), (241, 87139455), (267, 78653965), (445, 47192379), (723, 29046485), (1157, 18150915), (1205, 17427891), (1335, 15730793), (3133, 6703035), (3471, 6050305), (3615, 5809297), (5021, 4182555), (5785, 3630183), (9399, 2234345), (15063, 1394185), (15665, 1340607), (17355, 1210061), (21449, 979095), (25105, 836511), (46995, 446869), (64347, 326365), (65273, 321735), (75315, 278837), (107245, 195819)]