21791535

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{881}}^1$

素因数の和:1003

約数の個数: 32

約数和(自身を含む): 37340352

約数和(自身を除く): 15548817

約数列:

[1, 3, 5, 15, 17, 51, 85, 97, 255, 291, 485, 881, 1455, 1649, 2643, 4405, 4947, 8245, 13215, 14977, 24735, 44931, 74885, 85457, 224655, 256371, 427285, 1281855, 1452769, 4358307, 7263845, 21791535]

約数ペア:

[(1, 21791535), (3, 7263845), (5, 4358307), (15, 1452769), (17, 1281855), (51, 427285), (85, 256371), (97, 224655), (255, 85457), (291, 74885), (485, 44931), (881, 24735), (1455, 14977), (1649, 13215), (2643, 8245), (4405, 4947)]