661268590

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{15607}}^1$

素因数の和:15856

約数の個数: 32

約数和(自身を含む): 1258629120

約数和(自身を除く): 597360530

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 223, 446, 1115, 2230, 4237, 8474, 15607, 21185, 31214, 42370, 78035, 156070, 296533, 593066, 1482665, 2965330, 3480361, 6960722, 17401805, 34803610, 66126859, 132253718, 330634295, 661268590]

約数ペア:

[(1, 661268590), (2, 330634295), (5, 132253718), (10, 66126859), (19, 34803610), (38, 17401805), (95, 6960722), (190, 3480361), (223, 2965330), (446, 1482665), (1115, 593066), (2230, 296533), (4237, 156070), (8474, 78035), (15607, 42370), (21185, 31214)]