9976780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 23133600

約数和(自身を除く): 13156820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 449, 505, 898, 1010, 1111, 1796, 2020, 2222, 2245, 4444, 4490, 4939, 5555, 8980, 9878, 11110, 19756, 22220, 24695, 45349, 49390, 90698, 98780, 181396, 226745, 453490, 498839, 906980, 997678, 1995356, 2494195, 4988390, 9976780]

約数ペア:

[(1, 9976780), (2, 4988390), (4, 2494195), (5, 1995356), (10, 997678), (11, 906980), (20, 498839), (22, 453490), (44, 226745), (55, 181396), (101, 98780), (110, 90698), (202, 49390), (220, 45349), (404, 24695), (449, 22220), (505, 19756), (898, 11110), (1010, 9878), (1111, 8980), (1796, 5555), (2020, 4939), (2222, 4490), (2245, 4444)]