19772720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22469}}^1$

素因数の和:22493

約数の個数: 40

約数和(自身を含む): 50153040

約数和(自身を除く): 30380320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22469, 44938, 89876, 112345, 179752, 224690, 247159, 359504, 449380, 494318, 898760, 988636, 1235795, 1797520, 1977272, 2471590, 3954544, 4943180, 9886360, 19772720]

約数ペア:

[(1, 19772720), (2, 9886360), (4, 4943180), (5, 3954544), (8, 2471590), (10, 1977272), (11, 1797520), (16, 1235795), (20, 988636), (22, 898760), (40, 494318), (44, 449380), (55, 359504), (80, 247159), (88, 224690), (110, 179752), (176, 112345), (220, 89876), (440, 44938), (880, 22469)]