87206721

素因数分解:

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

素因数の和:12138

約数の個数: 20

約数和(自身を含む): 135658032

約数和(自身を除く): 48451311

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 12107, 36321, 84749, 254247, 593243, 1779729, 4152701, 12458103, 29068907, 87206721]

約数ペア:

[(1, 87206721), (3, 29068907), (7, 12458103), (21, 4152701), (49, 1779729), (147, 593243), (343, 254247), (1029, 84749), (2401, 36321), (7203, 12107)]