978399

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:316

約数の個数: 20

約数和(自身を含む): 1498464

約数和(自身を除く): 520065

約数列:

[1, 3, 9, 27, 47, 81, 141, 257, 423, 771, 1269, 2313, 3807, 6939, 12079, 20817, 36237, 108711, 326133, 978399]

約数ペア:

[(1, 978399), (3, 326133), (9, 108711), (27, 36237), (47, 20817), (81, 12079), (141, 6939), (257, 3807), (423, 2313), (771, 1269)]