20538315

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{577}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 41116608

約数和(自身を除く): 20578293

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 113, 315, 339, 565, 577, 791, 1017, 1695, 1731, 2373, 2885, 3955, 4039, 5085, 5193, 7119, 8655, 11865, 12117, 20195, 25965, 35595, 36351, 60585, 65201, 181755, 195603, 326005, 456407, 586809, 978015, 1369221, 2282035, 2934045, 4107663, 6846105, 20538315]

約数ペア:

[(1, 20538315), (3, 6846105), (5, 4107663), (7, 2934045), (9, 2282035), (15, 1369221), (21, 978015), (35, 586809), (45, 456407), (63, 326005), (105, 195603), (113, 181755), (315, 65201), (339, 60585), (565, 36351), (577, 35595), (791, 25965), (1017, 20195), (1695, 12117), (1731, 11865), (2373, 8655), (2885, 7119), (3955, 5193), (4039, 5085)]