209380815

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{221567}}^1$

素因数の和:221588

約数の個数: 32

約数和(自身を含む): 425410560

約数和(自身を除く): 216029745

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 221567, 664701, 1107835, 1550969, 1994103, 3323505, 4652907, 5982309, 7754845, 9970515, 13958721, 23264535, 29911545, 41876163, 69793605, 209380815]

約数ペア:

[(1, 209380815), (3, 69793605), (5, 41876163), (7, 29911545), (9, 23264535), (15, 13958721), (21, 9970515), (27, 7754845), (35, 5982309), (45, 4652907), (63, 3323505), (105, 1994103), (135, 1550969), (189, 1107835), (315, 664701), (945, 221567)]