2778425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:209

約数の個数: 24

約数和(自身を含む): 3791424

約数和(自身を除く): 1012999

約数列:

[1, 5, 13, 25, 65, 83, 103, 325, 415, 515, 1079, 1339, 2075, 2575, 5395, 6695, 8549, 26975, 33475, 42745, 111137, 213725, 555685, 2778425]

約数ペア:

[(1, 2778425), (5, 555685), (13, 213725), (25, 111137), (65, 42745), (83, 33475), (103, 26975), (325, 8549), (415, 6695), (515, 5395), (1079, 2575), (1339, 2075)]