1297821

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2687}}^1$

素因数の和:2720

約数の個数: 16

約数和(自身を含む): 2064384

約数和(自身を除く): 766563

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 2687, 8061, 18809, 56427, 61801, 185403, 432607, 1297821]

約数ペア:

[(1, 1297821), (3, 432607), (7, 185403), (21, 61801), (23, 56427), (69, 18809), (161, 8061), (483, 2687)]