161965825

素因数分解:

$5^2\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1213}}^1$

素因数の和:1346

約数の個数: 36

約数和(自身を含む): 235965180

約数和(自身を除く): 73999355

約数列:

[1, 5, 7, 25, 35, 49, 109, 175, 245, 545, 763, 1213, 1225, 2725, 3815, 5341, 6065, 8491, 19075, 26705, 30325, 42455, 59437, 132217, 133525, 212275, 297185, 661085, 925519, 1485925, 3305425, 4627595, 6478633, 23137975, 32393165, 161965825]

約数ペア:

[(1, 161965825), (5, 32393165), (7, 23137975), (25, 6478633), (35, 4627595), (49, 3305425), (109, 1485925), (175, 925519), (245, 661085), (545, 297185), (763, 212275), (1213, 133525), (1225, 132217), (2725, 59437), (3815, 42455), (5341, 30325), (6065, 26705), (8491, 19075)]