20181245945

素因数分解:

$5^1\times 7^1\times {\mathrm{7993}}^1\times {\mathrm{72139}}^1$

素因数の和:80144

約数の個数: 16

約数和(自身を含む): 27680983680

約数和(自身を除く): 7499737735

約数列:

[1, 5, 7, 35, 7993, 39965, 55951, 72139, 279755, 360695, 504973, 2524865, 576607027, 2883035135, 4036249189, 20181245945]

約数ペア:

[(1, 20181245945), (5, 4036249189), (7, 2883035135), (35, 576607027), (7993, 2524865), (39965, 504973), (55951, 360695), (72139, 279755)]