2021819891

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{207643}}^1$

素因数の和:207770

約数の個数: 16

約数和(自身を含む): 2511661824

約数和(自身を除く): 489841933

約数列:

[1, 7, 13, 91, 107, 749, 1391, 9737, 207643, 1453501, 2699359, 18895513, 22217801, 155524607, 288831413, 2021819891]

約数ペア:

[(1, 2021819891), (7, 288831413), (13, 155524607), (91, 22217801), (107, 18895513), (749, 2699359), (1391, 1453501), (9737, 207643)]