20000901

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{1663}}^1$

素因数の和:1896

約数の個数: 16

約数和(自身を含む): 28221440

約数和(自身を除く): 8220539

約数列:

[1, 3, 19, 57, 211, 633, 1663, 4009, 4989, 12027, 31597, 94791, 350893, 1052679, 6666967, 20000901]

約数ペア:

[(1, 20000901), (3, 6666967), (19, 1052679), (57, 350893), (211, 94791), (633, 31597), (1663, 12027), (4009, 4989)]