399572109

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{259631}}^1$

素因数の和:259662

約数の個数: 20

約数和(自身を含む): 628309440

約数和(自身を除く): 228737331

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 259631, 778893, 2336679, 4932989, 7010037, 14798967, 21030111, 44396901, 133190703, 399572109]

約数ペア:

[(1, 399572109), (3, 133190703), (9, 44396901), (19, 21030111), (27, 14798967), (57, 7010037), (81, 4932989), (171, 2336679), (513, 778893), (1539, 259631)]