219987531

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{887}}^1\times {\mathrm{1621}}^1$

素因数の和:2531

約数の個数: 24

約数和(自身を含む): 337038624

約数和(自身を除く): 117051093

約数列:

[1, 3, 9, 17, 51, 153, 887, 1621, 2661, 4863, 7983, 14589, 15079, 27557, 45237, 82671, 135711, 248013, 1437827, 4313481, 12940443, 24443059, 73329177, 219987531]

約数ペア:

[(1, 219987531), (3, 73329177), (9, 24443059), (17, 12940443), (51, 4313481), (153, 1437827), (887, 248013), (1621, 135711), (2661, 82671), (4863, 45237), (7983, 27557), (14589, 15079)]