261489711

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{211049}}^1$

素因数の和:211118

約数の個数: 16

約数和(自身を含む): 405216000

約数和(自身を除く): 143726289

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 211049, 633147, 1477343, 4432029, 12451891, 37355673, 87163237, 261489711]

約数ペア:

[(1, 261489711), (3, 87163237), (7, 37355673), (21, 12451891), (59, 4432029), (177, 1477343), (413, 633147), (1239, 211049)]