20087795

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:109

約数の個数: 64

約数和(自身を含む): 32659200

約数和(自身を除く): 12571405

約数列:

[1, 5, 7, 13, 17, 35, 49, 53, 65, 85, 91, 119, 221, 245, 265, 343, 371, 455, 595, 637, 689, 833, 901, 1105, 1547, 1715, 1855, 2597, 3185, 3445, 4165, 4459, 4505, 4823, 5831, 6307, 7735, 10829, 11713, 12985, 18179, 22295, 24115, 29155, 31535, 33761, 44149, 54145, 58565, 75803, 81991, 90895, 168805, 220745, 236327, 309043, 379015, 409955, 573937, 1181635, 1545215, 2869685, 4017559, 20087795]

約数ペア:

[(1, 20087795), (5, 4017559), (7, 2869685), (13, 1545215), (17, 1181635), (35, 573937), (49, 409955), (53, 379015), (65, 309043), (85, 236327), (91, 220745), (119, 168805), (221, 90895), (245, 81991), (265, 75803), (343, 58565), (371, 54145), (455, 44149), (595, 33761), (637, 31535), (689, 29155), (833, 24115), (901, 22295), (1105, 18179), (1547, 12985), (1715, 11713), (1855, 10829), (2597, 7735), (3185, 6307), (3445, 5831), (4165, 4823), (4459, 4505)]