2178275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^2$

素因数の和:199

約数の個数: 18

約数和(自身を含む): 2980092

約数和(自身を除く): 801817

約数列:

[1, 5, 11, 25, 55, 89, 275, 445, 979, 2225, 4895, 7921, 24475, 39605, 87131, 198025, 435655, 2178275]

約数ペア:

[(1, 2178275), (5, 435655), (11, 198025), (25, 87131), (55, 39605), (89, 24475), (275, 7921), (445, 4895), (979, 2225)]