81042731

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{683}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 107163648

約数和(自身を除く): 26120917

約数列:

[1, 7, 11, 23, 67, 77, 161, 253, 469, 683, 737, 1541, 1771, 4781, 5159, 7513, 10787, 15709, 16951, 45761, 52591, 109963, 118657, 172799, 320327, 503371, 1052503, 1209593, 3523597, 7367521, 11577533, 81042731]

約数ペア:

[(1, 81042731), (7, 11577533), (11, 7367521), (23, 3523597), (67, 1209593), (77, 1052503), (161, 503371), (253, 320327), (469, 172799), (683, 118657), (737, 109963), (1541, 52591), (1771, 45761), (4781, 16951), (5159, 15709), (7513, 10787)]