821487009

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{118901}}^1$

素因数の和:118965

約数の個数: 24

約数和(自身を含む): 1301263488

約数和(自身を除く): 479776479

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 6909, 118901, 356703, 832307, 2496921, 5588347, 5826149, 16765041, 17478447, 39118429, 117355287, 273829003, 821487009]

約数ペア:

[(1, 821487009), (3, 273829003), (7, 117355287), (21, 39118429), (47, 17478447), (49, 16765041), (141, 5826149), (147, 5588347), (329, 2496921), (987, 832307), (2303, 356703), (6909, 118901)]