21182210

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:471

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 23633470

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 139, 245, 278, 311, 490, 622, 695, 973, 1390, 1555, 1946, 2177, 3110, 4354, 4865, 6811, 9730, 10885, 13622, 15239, 21770, 30478, 34055, 43229, 68110, 76195, 86458, 152390, 216145, 302603, 432290, 605206, 1513015, 2118221, 3026030, 4236442, 10591105, 21182210]

約数ペア:

[(1, 21182210), (2, 10591105), (5, 4236442), (7, 3026030), (10, 2118221), (14, 1513015), (35, 605206), (49, 432290), (70, 302603), (98, 216145), (139, 152390), (245, 86458), (278, 76195), (311, 68110), (490, 43229), (622, 34055), (695, 30478), (973, 21770), (1390, 15239), (1555, 13622), (1946, 10885), (2177, 9730), (3110, 6811), (4354, 4865)]