19720425

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{15467}}^1$

素因数の和:15497

約数の個数: 24

約数和(自身を含む): 34524576

約数和(自身を除く): 14804151

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 15467, 46401, 77335, 232005, 262939, 386675, 788817, 1160025, 1314695, 3944085, 6573475, 19720425]

約数ペア:

[(1, 19720425), (3, 6573475), (5, 3944085), (15, 1314695), (17, 1160025), (25, 788817), (51, 386675), (75, 262939), (85, 232005), (255, 77335), (425, 46401), (1275, 15467)]