8181140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{907}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 19220544

約数和(自身を除く): 11039404

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 907, 1804, 1814, 2255, 3628, 4510, 4535, 9020, 9070, 9977, 18140, 19954, 37187, 39908, 49885, 74374, 99770, 148748, 185935, 199540, 371870, 409057, 743740, 818114, 1636228, 2045285, 4090570, 8181140]

約数ペア:

[(1, 8181140), (2, 4090570), (4, 2045285), (5, 1636228), (10, 818114), (11, 743740), (20, 409057), (22, 371870), (41, 199540), (44, 185935), (55, 148748), (82, 99770), (110, 74374), (164, 49885), (205, 39908), (220, 37187), (410, 19954), (451, 18140), (820, 9977), (902, 9070), (907, 9020), (1804, 4535), (1814, 4510), (2255, 3628)]