21865105

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7165295

約数列:

[1, 5, 19, 47, 59, 83, 95, 235, 295, 415, 893, 1121, 1577, 2773, 3901, 4465, 4897, 5605, 7885, 13865, 19505, 24485, 52687, 74119, 93043, 230159, 263435, 370595, 465215, 1150795, 4373021, 21865105]

約数ペア:

[(1, 21865105), (5, 4373021), (19, 1150795), (47, 465215), (59, 370595), (83, 263435), (95, 230159), (235, 93043), (295, 74119), (415, 52687), (893, 24485), (1121, 19505), (1577, 13865), (2773, 7885), (3901, 5605), (4465, 4897)]