20920863

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{4229}}^1$

素因数の和:4346

約数の個数: 16

約数和(自身を含む): 29846880

約数和(自身を除く): 8926017

約数列:

[1, 3, 17, 51, 97, 291, 1649, 4229, 4947, 12687, 71893, 215679, 410213, 1230639, 6973621, 20920863]

約数ペア:

[(1, 20920863), (3, 6973621), (17, 1230639), (51, 410213), (97, 215679), (291, 71893), (1649, 12687), (4229, 4947)]