20270195

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 27760320

約数和(自身を除く): 7490125

約数列:

[1, 5, 11, 41, 55, 89, 101, 205, 445, 451, 505, 979, 1111, 2255, 3649, 4141, 4895, 5555, 8989, 18245, 20705, 40139, 44945, 45551, 98879, 200695, 227755, 368549, 494395, 1842745, 4054039, 20270195]

約数ペア:

[(1, 20270195), (5, 4054039), (11, 1842745), (41, 494395), (55, 368549), (89, 227755), (101, 200695), (205, 98879), (445, 45551), (451, 44945), (505, 40139), (979, 20705), (1111, 18245), (2255, 8989), (3649, 5555), (4141, 4895)]