20538189

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6151}}^1$

素因数の和:6217

約数の個数: 24

約数和(自身を含む): 34549632

約数和(自身を除く): 14011443

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6151, 18453, 43057, 55359, 129171, 326003, 387513, 978009, 2282021, 2934027, 6846063, 20538189]

約数ペア:

[(1, 20538189), (3, 6846063), (7, 2934027), (9, 2282021), (21, 978009), (53, 387513), (63, 326003), (159, 129171), (371, 55359), (477, 43057), (1113, 18453), (3339, 6151)]