20860540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:582

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 25406660

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 101, 115, 202, 230, 404, 449, 460, 505, 898, 1010, 1796, 2020, 2245, 2323, 4490, 4646, 8980, 9292, 10327, 11615, 20654, 23230, 41308, 45349, 46460, 51635, 90698, 103270, 181396, 206540, 226745, 453490, 906980, 1043027, 2086054, 4172108, 5215135, 10430270, 20860540]

約数ペア:

[(1, 20860540), (2, 10430270), (4, 5215135), (5, 4172108), (10, 2086054), (20, 1043027), (23, 906980), (46, 453490), (92, 226745), (101, 206540), (115, 181396), (202, 103270), (230, 90698), (404, 51635), (449, 46460), (460, 45349), (505, 41308), (898, 23230), (1010, 20654), (1796, 11615), (2020, 10327), (2245, 9292), (2323, 8980), (4490, 4646)]