21749065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{8161}}^1$

素因数の和:8220

約数の個数: 16

約数和(自身を含む): 28795536

約数和(自身を除く): 7046471

約数列:

[1, 5, 13, 41, 65, 205, 533, 2665, 8161, 40805, 106093, 334601, 530465, 1673005, 4349813, 21749065]

約数ペア:

[(1, 21749065), (5, 4349813), (13, 1673005), (41, 530465), (65, 334601), (205, 106093), (533, 40805), (2665, 8161)]