1278639

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:132

約数の個数: 32

約数和(自身を含む): 2073600

約数和(自身を除く): 794961

約数列:

[1, 3, 9, 23, 27, 29, 69, 71, 87, 207, 213, 261, 621, 639, 667, 783, 1633, 1917, 2001, 2059, 4899, 6003, 6177, 14697, 18009, 18531, 44091, 47357, 55593, 142071, 426213, 1278639]

約数ペア:

[(1, 1278639), (3, 426213), (9, 142071), (23, 55593), (27, 47357), (29, 44091), (69, 18531), (71, 18009), (87, 14697), (207, 6177), (213, 6003), (261, 4899), (621, 2059), (639, 2001), (667, 1917), (783, 1633)]