81497240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{185221}}^1$

素因数の和:185243

約数の個数: 32

約数和(自身を含む): 200039760

約数和(自身を除く): 118542520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 185221, 370442, 740884, 926105, 1481768, 1852210, 2037431, 3704420, 4074862, 7408840, 8149724, 10187155, 16299448, 20374310, 40748620, 81497240]

約数ペア:

[(1, 81497240), (2, 40748620), (4, 20374310), (5, 16299448), (8, 10187155), (10, 8149724), (11, 7408840), (20, 4074862), (22, 3704420), (40, 2037431), (44, 1852210), (55, 1481768), (88, 926105), (110, 740884), (220, 370442), (440, 185221)]