20217729

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{50671}}^1$

素因数の和:50700

約数の個数: 16

約数和(自身を含む): 32430080

約数和(自身を除く): 12212351

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 50671, 152013, 354697, 962749, 1064091, 2888247, 6739243, 20217729]

約数ペア:

[(1, 20217729), (3, 6739243), (7, 2888247), (19, 1064091), (21, 962749), (57, 354697), (133, 152013), (399, 50671)]