80198505

素因数分解:

$3^5\times 5^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 145454400

約数和(自身を除く): 65255895

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 149, 243, 405, 443, 447, 745, 1215, 1329, 1341, 2215, 2235, 3987, 4023, 6645, 6705, 11961, 12069, 19935, 20115, 35883, 36207, 59805, 60345, 66007, 107649, 179415, 181035, 198021, 330035, 538245, 594063, 990105, 1782189, 2970315, 5346567, 8910945, 16039701, 26732835, 80198505]

約数ペア:

[(1, 80198505), (3, 26732835), (5, 16039701), (9, 8910945), (15, 5346567), (27, 2970315), (45, 1782189), (81, 990105), (135, 594063), (149, 538245), (243, 330035), (405, 198021), (443, 181035), (447, 179415), (745, 107649), (1215, 66007), (1329, 60345), (1341, 59805), (2215, 36207), (2235, 35883), (3987, 20115), (4023, 19935), (6645, 12069), (6705, 11961)]