261620163

素因数分解:

$3^2\times 7^4\times {\mathrm{12107}}^1$

素因数の和:12141

約数の個数: 30

約数和(自身を含む): 440888604

約数和(自身を除く): 179268441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 2401, 3087, 7203, 12107, 21609, 36321, 84749, 108963, 254247, 593243, 762741, 1779729, 4152701, 5339187, 12458103, 29068907, 37374309, 87206721, 261620163]

約数ペア:

[(1, 261620163), (3, 87206721), (7, 37374309), (9, 29068907), (21, 12458103), (49, 5339187), (63, 4152701), (147, 1779729), (343, 762741), (441, 593243), (1029, 254247), (2401, 108963), (3087, 84749), (7203, 36321), (12107, 21609)]