20847591

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{569}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 32832000

約数和(自身を除く): 11984409

約数列:

[1, 3, 9, 23, 27, 59, 69, 177, 207, 531, 569, 621, 1357, 1593, 1707, 4071, 5121, 12213, 13087, 15363, 33571, 36639, 39261, 100713, 117783, 302139, 353349, 772133, 906417, 2316399, 6949197, 20847591]

約数ペア:

[(1, 20847591), (3, 6949197), (9, 2316399), (23, 906417), (27, 772133), (59, 353349), (69, 302139), (177, 117783), (207, 100713), (531, 39261), (569, 36639), (621, 33571), (1357, 15363), (1593, 13087), (1707, 12213), (4071, 5121)]