20946375

素因数分解:

$3^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:497

約数の個数: 48

約数和(自身を含む): 38726688

約数和(自身を除く): 17780313

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 125, 129, 215, 225, 375, 387, 433, 645, 1075, 1125, 1299, 1935, 2165, 3225, 3897, 5375, 6495, 9675, 10825, 16125, 18619, 19485, 32475, 48375, 54125, 55857, 93095, 97425, 162375, 167571, 279285, 465475, 487125, 837855, 1396425, 2327375, 4189275, 6982125, 20946375]

約数ペア:

[(1, 20946375), (3, 6982125), (5, 4189275), (9, 2327375), (15, 1396425), (25, 837855), (43, 487125), (45, 465475), (75, 279285), (125, 167571), (129, 162375), (215, 97425), (225, 93095), (375, 55857), (387, 54125), (433, 48375), (645, 32475), (1075, 19485), (1125, 18619), (1299, 16125), (1935, 10825), (2165, 9675), (3225, 6495), (3897, 5375)]