19893610

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:471

約数の個数: 48

約数和(自身を含む): 40420296

約数和(自身を除く): 20526686

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 121, 205, 242, 401, 410, 451, 605, 802, 902, 1210, 2005, 2255, 4010, 4411, 4510, 4961, 8822, 9922, 16441, 22055, 24805, 32882, 44110, 48521, 49610, 82205, 97042, 164410, 180851, 242605, 361702, 485210, 904255, 1808510, 1989361, 3978722, 9946805, 19893610]

約数ペア:

[(1, 19893610), (2, 9946805), (5, 3978722), (10, 1989361), (11, 1808510), (22, 904255), (41, 485210), (55, 361702), (82, 242605), (110, 180851), (121, 164410), (205, 97042), (242, 82205), (401, 49610), (410, 48521), (451, 44110), (605, 32882), (802, 24805), (902, 22055), (1210, 16441), (2005, 9922), (2255, 8822), (4010, 4961), (4411, 4510)]