21790719

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1951}}^1$

素因数の和:2047

約数の個数: 24

約数和(自身を含む): 33800832

約数和(自身を除く): 12010113

約数列:

[1, 3, 9, 17, 51, 73, 153, 219, 657, 1241, 1951, 3723, 5853, 11169, 17559, 33167, 99501, 142423, 298503, 427269, 1281807, 2421191, 7263573, 21790719]

約数ペア:

[(1, 21790719), (3, 7263573), (9, 2421191), (17, 1281807), (51, 427269), (73, 298503), (153, 142423), (219, 99501), (657, 33167), (1241, 17559), (1951, 11169), (3723, 5853)]