18796985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 25608960

約数和(自身を除く): 6811975

約数列:

[1, 5, 17, 19, 85, 95, 103, 113, 323, 515, 565, 1615, 1751, 1921, 1957, 2147, 8755, 9605, 9785, 10735, 11639, 33269, 36499, 58195, 166345, 182495, 197863, 221141, 989315, 1105705, 3759397, 18796985]

約数ペア:

[(1, 18796985), (5, 3759397), (17, 1105705), (19, 989315), (85, 221141), (95, 197863), (103, 182495), (113, 166345), (323, 58195), (515, 36499), (565, 33269), (1615, 11639), (1751, 10735), (1921, 9785), (1957, 9605), (2147, 8755)]