20831545

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 30578688

約数和(自身を除く): 9747143

約数列:

[1, 5, 7, 17, 35, 85, 119, 157, 223, 595, 785, 1099, 1115, 1561, 2669, 3791, 5495, 7805, 13345, 18683, 18955, 26537, 35011, 93415, 132685, 175055, 245077, 595187, 1225385, 2975935, 4166309, 20831545]

約数ペア:

[(1, 20831545), (5, 4166309), (7, 2975935), (17, 1225385), (35, 595187), (85, 245077), (119, 175055), (157, 132685), (223, 93415), (595, 35011), (785, 26537), (1099, 18955), (1115, 18683), (1561, 13345), (2669, 7805), (3791, 5495)]