20175701

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1667}}^1$

素因数の和:1713

約数の個数: 24

約数和(自身を含む): 26621280

約数和(自身を除く): 6445579

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 637, 931, 1667, 1729, 11669, 12103, 21671, 31673, 81683, 151697, 221711, 411749, 1061879, 1551977, 2882243, 20175701]

約数ペア:

[(1, 20175701), (7, 2882243), (13, 1551977), (19, 1061879), (49, 411749), (91, 221711), (133, 151697), (247, 81683), (637, 31673), (931, 21671), (1667, 12103), (1729, 11669)]