247571385

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1\times {\mathrm{521}}^1$

素因数の和:1009

約数の個数: 32

約数和(自身を含む): 402900480

約数和(自身を除く): 155329095

約数列:

[1, 3, 5, 15, 79, 237, 395, 401, 521, 1185, 1203, 1563, 2005, 2605, 6015, 7815, 31679, 41159, 95037, 123477, 158395, 205795, 208921, 475185, 617385, 626763, 1044605, 3133815, 16504759, 49514277, 82523795, 247571385]

約数ペア:

[(1, 247571385), (3, 82523795), (5, 49514277), (15, 16504759), (79, 3133815), (237, 1044605), (395, 626763), (401, 617385), (521, 475185), (1185, 208921), (1203, 205795), (1563, 158395), (2005, 123477), (2605, 95037), (6015, 41159), (7815, 31679)]