28704519

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1549}}^1$

素因数の和:1655

約数の個数: 24

約数和(自身を含む): 43524000

約数和(自身を除く): 14819481

約数列:

[1, 3, 9, 29, 71, 87, 213, 261, 639, 1549, 2059, 4647, 6177, 13941, 18531, 44921, 109979, 134763, 329937, 404289, 989811, 3189391, 9568173, 28704519]

約数ペア:

[(1, 28704519), (3, 9568173), (9, 3189391), (29, 989811), (71, 404289), (87, 329937), (213, 134763), (261, 109979), (639, 44921), (1549, 18531), (2059, 13941), (4647, 6177)]