209973407

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1\times {\mathrm{1409}}^1$

素因数の和:1826

約数の個数: 16

約数和(自身を含む): 244776000

約数和(自身を除く): 34802593

約数列:

[1, 7, 61, 349, 427, 1409, 2443, 9863, 21289, 85949, 149023, 491741, 601643, 3442187, 29996201, 209973407]

約数ペア:

[(1, 209973407), (7, 29996201), (61, 3442187), (349, 601643), (427, 491741), (1409, 149023), (2443, 85949), (9863, 21289)]