9780155

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 15759360

約数和(自身を除く): 5979205

約数列:

[1, 5, 7, 11, 19, 35, 49, 55, 77, 95, 133, 191, 209, 245, 385, 539, 665, 931, 955, 1045, 1337, 1463, 2101, 2695, 3629, 4655, 6685, 7315, 9359, 10241, 10505, 14707, 18145, 25403, 39919, 46795, 51205, 73535, 102949, 127015, 177821, 199595, 279433, 514745, 889105, 1397165, 1956031, 9780155]

約数ペア:

[(1, 9780155), (5, 1956031), (7, 1397165), (11, 889105), (19, 514745), (35, 279433), (49, 199595), (55, 177821), (77, 127015), (95, 102949), (133, 73535), (191, 51205), (209, 46795), (245, 39919), (385, 25403), (539, 18145), (665, 14707), (931, 10505), (955, 10241), (1045, 9359), (1337, 7315), (1463, 6685), (2101, 4655), (2695, 3629)]