81978642

素因数分解:

$2^1\times 3^4\times {\mathrm{643}}^1\times {\mathrm{787}}^1$

素因数の和:1444

約数の個数: 40

約数和(自身を含む): 184212336

約数和(自身を除く): 102233694

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 643, 787, 1286, 1574, 1929, 2361, 3858, 4722, 5787, 7083, 11574, 14166, 17361, 21249, 34722, 42498, 52083, 63747, 104166, 127494, 506041, 1012082, 1518123, 3036246, 4554369, 9108738, 13663107, 27326214, 40989321, 81978642]

約数ペア:

[(1, 81978642), (2, 40989321), (3, 27326214), (6, 13663107), (9, 9108738), (18, 4554369), (27, 3036246), (54, 1518123), (81, 1012082), (162, 506041), (643, 127494), (787, 104166), (1286, 63747), (1574, 52083), (1929, 42498), (2361, 34722), (3858, 21249), (4722, 17361), (5787, 14166), (7083, 11574)]