20249075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 31974144

約数和(自身を除く): 11725069

約数列:

[1, 5, 7, 11, 25, 35, 55, 67, 77, 157, 175, 275, 335, 385, 469, 737, 785, 1099, 1675, 1727, 1925, 2345, 3685, 3925, 5159, 5495, 8635, 10519, 11725, 12089, 18425, 25795, 27475, 43175, 52595, 60445, 73633, 115709, 128975, 262975, 302225, 368165, 578545, 809963, 1840825, 2892725, 4049815, 20249075]

約数ペア:

[(1, 20249075), (5, 4049815), (7, 2892725), (11, 1840825), (25, 809963), (35, 578545), (55, 368165), (67, 302225), (77, 262975), (157, 128975), (175, 115709), (275, 73633), (335, 60445), (385, 52595), (469, 43175), (737, 27475), (785, 25795), (1099, 18425), (1675, 12089), (1727, 11725), (1925, 10519), (2345, 8635), (3685, 5495), (3925, 5159)]