21362185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7643}}^1$

素因数の和:7704

約数の個数: 16

約数和(自身を含む): 28252224

約数和(自身を除く): 6890039

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7643, 38215, 99359, 328649, 496795, 1643245, 4272437, 21362185]

約数ペア:

[(1, 21362185), (5, 4272437), (13, 1643245), (43, 496795), (65, 328649), (215, 99359), (559, 38215), (2795, 7643)]