21282135

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1291}}^1$

素因数の和:1463

約数の個数: 32

約数和(自身を含む): 39194112

約数和(自身を除く): 17911977

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 157, 471, 785, 1099, 1291, 2355, 3297, 3873, 5495, 6455, 9037, 16485, 19365, 27111, 45185, 135555, 202687, 608061, 1013435, 1418809, 3040305, 4256427, 7094045, 21282135]

約数ペア:

[(1, 21282135), (3, 7094045), (5, 4256427), (7, 3040305), (15, 1418809), (21, 1013435), (35, 608061), (105, 202687), (157, 135555), (471, 45185), (785, 27111), (1099, 19365), (1291, 16485), (2355, 9037), (3297, 6455), (3873, 5495)]