19943833

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:397

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 5336807

約数列:

[1, 7, 13, 49, 91, 131, 239, 637, 917, 1673, 1703, 3107, 6419, 11711, 11921, 21749, 31309, 83447, 152243, 219163, 407017, 1534141, 2849119, 19943833]

約数ペア:

[(1, 19943833), (7, 2849119), (13, 1534141), (49, 407017), (91, 219163), (131, 152243), (239, 83447), (637, 31309), (917, 21749), (1673, 11921), (1703, 11711), (3107, 6419)]