20965075

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:172

約数の個数: 36

約数和(自身を含む): 28913328

約数和(自身を除く): 7948253

約数列:

[1, 5, 19, 23, 25, 95, 101, 115, 361, 437, 475, 505, 575, 1805, 1919, 2185, 2323, 2525, 8303, 9025, 9595, 10925, 11615, 36461, 41515, 44137, 47975, 58075, 182305, 207575, 220685, 838603, 911525, 1103425, 4193015, 20965075]

約数ペア:

[(1, 20965075), (5, 4193015), (19, 1103425), (23, 911525), (25, 838603), (95, 220685), (101, 207575), (115, 182305), (361, 58075), (437, 47975), (475, 44137), (505, 41515), (575, 36461), (1805, 11615), (1919, 10925), (2185, 9595), (2323, 9025), (2525, 8303)]