20625325

素因数分解:

$5^2\times 7^2\times {\mathrm{113}}^1\times {\mathrm{149}}^1$

素因数の和:286

約数の個数: 36

約数和(自身を含む): 30215700

約数和(自身を除く): 9590375

約数列:

[1, 5, 7, 25, 35, 49, 113, 149, 175, 245, 565, 745, 791, 1043, 1225, 2825, 3725, 3955, 5215, 5537, 7301, 16837, 19775, 26075, 27685, 36505, 84185, 117859, 138425, 182525, 420925, 589295, 825013, 2946475, 4125065, 20625325]

約数ペア:

[(1, 20625325), (5, 4125065), (7, 2946475), (25, 825013), (35, 589295), (49, 420925), (113, 182525), (149, 138425), (175, 117859), (245, 84185), (565, 36505), (745, 27685), (791, 26075), (1043, 19775), (1225, 16837), (2825, 7301), (3725, 5537), (3955, 5215)]