21997525

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1951}}^1$

素因数の和:2013

約数の個数: 24

約数和(自身を含む): 30498048

約数和(自身を除く): 8500523

約数列:

[1, 5, 11, 25, 41, 55, 205, 275, 451, 1025, 1951, 2255, 9755, 11275, 21461, 48775, 79991, 107305, 399955, 536525, 879901, 1999775, 4399505, 21997525]

約数ペア:

[(1, 21997525), (5, 4399505), (11, 1999775), (25, 879901), (41, 536525), (55, 399955), (205, 107305), (275, 79991), (451, 48775), (1025, 21461), (1951, 11275), (2255, 9755)]