209293679

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{20521}}^1$

素因数の和:20606

約数の個数: 16

約数和(自身を含む): 252174336

約数和(自身を除く): 42880657

約数列:

[1, 7, 31, 47, 217, 329, 1457, 10199, 20521, 143647, 636151, 964487, 4453057, 6751409, 29899097, 209293679]

約数ペア:

[(1, 209293679), (7, 29899097), (31, 6751409), (47, 4453057), (217, 964487), (329, 636151), (1457, 143647), (10199, 20521)]