19974999

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{9923}}^1$

素因数の和:9998

約数の個数: 16

約数和(自身を含む): 29533824

約数和(自身を除く): 9558825

約数列:

[1, 3, 11, 33, 61, 183, 671, 2013, 9923, 29769, 109153, 327459, 605303, 1815909, 6658333, 19974999]

約数ペア:

[(1, 19974999), (3, 6658333), (11, 1815909), (33, 605303), (61, 327459), (183, 109153), (671, 29769), (2013, 9923)]