20388591

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{6803}}^1$

素因数の和:6852

約数の個数: 20

約数和(自身を含む): 31284792

約数和(自身を除く): 10896201

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 6803, 20409, 61227, 183681, 251711, 551043, 755133, 2265399, 6796197, 20388591]

約数ペア:

[(1, 20388591), (3, 6796197), (9, 2265399), (27, 755133), (37, 551043), (81, 251711), (111, 183681), (333, 61227), (999, 20409), (2997, 6803)]