861678

素因数分解:

$2^1\times 3^7\times {\mathrm{197}}^1$

素因数の和:220

約数の個数: 32

約数和(自身を含む): 1948320

約数和(自身を除く): 1086642

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 197, 243, 394, 486, 591, 729, 1182, 1458, 1773, 2187, 3546, 4374, 5319, 10638, 15957, 31914, 47871, 95742, 143613, 287226, 430839, 861678]

約数ペア:

[(1, 861678), (2, 430839), (3, 287226), (6, 143613), (9, 95742), (18, 47871), (27, 31914), (54, 15957), (81, 10638), (162, 5319), (197, 4374), (243, 3546), (394, 2187), (486, 1773), (591, 1458), (729, 1182)]