21423995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{821}}^1$

素因数の和:1150

約数の個数: 16

約数和(自身を含む): 27343008

約数和(自身を除く): 5919013

約数列:

[1, 5, 17, 85, 307, 821, 1535, 4105, 5219, 13957, 26095, 69785, 252047, 1260235, 4284799, 21423995]

約数ペア:

[(1, 21423995), (5, 4284799), (17, 1260235), (85, 252047), (307, 69785), (821, 26095), (1535, 13957), (4105, 5219)]