20994561

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{14489}}^1$

素因数の和:14525

約数の個数: 24

約数和(自身を含む): 36167040

約数和(自身を除く): 15172479

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 14489, 43467, 101423, 130401, 304269, 333247, 912807, 999741, 2332729, 2999223, 6998187, 20994561]

約数ペア:

[(1, 20994561), (3, 6998187), (7, 2999223), (9, 2332729), (21, 999741), (23, 912807), (63, 333247), (69, 304269), (161, 130401), (207, 101423), (483, 43467), (1449, 14489)]