20262725

素因数分解:

$5^2\times 7^3\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:187

約数の個数: 48

約数和(自身を含む): 31248000

約数和(自身を除く): 10985275

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 139, 175, 245, 343, 425, 595, 695, 833, 973, 1225, 1715, 2363, 2975, 3475, 4165, 4865, 5831, 6811, 8575, 11815, 16541, 20825, 24325, 29155, 34055, 47677, 59075, 82705, 115787, 145775, 170275, 238385, 413525, 578935, 810509, 1191925, 2894675, 4052545, 20262725]

約数ペア:

[(1, 20262725), (5, 4052545), (7, 2894675), (17, 1191925), (25, 810509), (35, 578935), (49, 413525), (85, 238385), (119, 170275), (139, 145775), (175, 115787), (245, 82705), (343, 59075), (425, 47677), (595, 34055), (695, 29155), (833, 24325), (973, 20825), (1225, 16541), (1715, 11815), (2363, 8575), (2975, 6811), (3475, 5831), (4165, 4865)]