638052499

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{20749}}^1$

素因数の和:20970

約数の個数: 16

約数和(自身を含む): 764928000

約数和(自身を除く): 126875501

約数列:

[1, 7, 23, 161, 191, 1337, 4393, 20749, 30751, 145243, 477227, 3340589, 3963059, 27741413, 91150357, 638052499]

約数ペア:

[(1, 638052499), (7, 91150357), (23, 27741413), (161, 3963059), (191, 3340589), (1337, 477227), (4393, 145243), (20749, 30751)]