20156913

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{10321}}^1$

素因数の和:10365

約数の個数: 24

約数和(自身を含む): 34351616

約数和(自身を除く): 14194703

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 10321, 30963, 72247, 92889, 216741, 319951, 650223, 959853, 2239657, 2879559, 6718971, 20156913]

約数ペア:

[(1, 20156913), (3, 6718971), (7, 2879559), (9, 2239657), (21, 959853), (31, 650223), (63, 319951), (93, 216741), (217, 92889), (279, 72247), (651, 30963), (1953, 10321)]