28050505

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 40255488

約数和(自身を除く): 12204983

約数列:

[1, 5, 7, 31, 35, 103, 155, 217, 251, 515, 721, 1085, 1255, 1757, 3193, 3605, 7781, 8785, 15965, 22351, 25853, 38905, 54467, 111755, 129265, 180971, 272335, 801443, 904855, 4007215, 5610101, 28050505]

約数ペア:

[(1, 28050505), (5, 5610101), (7, 4007215), (31, 904855), (35, 801443), (103, 272335), (155, 180971), (217, 129265), (251, 111755), (515, 54467), (721, 38905), (1085, 25853), (1255, 22351), (1757, 15965), (3193, 8785), (3605, 7781)]