21816790

素因数分解:

$2^1\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{2141}}^1$

素因数の和:3167

約数の個数: 16

約数和(自身を含む): 39327120

約数和(自身を除く): 17510330

約数列:

[1, 2, 5, 10, 1019, 2038, 2141, 4282, 5095, 10190, 10705, 21410, 2181679, 4363358, 10908395, 21816790]

約数ペア:

[(1, 21816790), (2, 10908395), (5, 4363358), (10, 2181679), (1019, 21410), (2038, 10705), (2141, 10190), (4282, 5095)]