21895610

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{6421}}^1$

素因数の和:6470

約数の個数: 32

約数和(自身を含む): 44388864

約数和(自身を除く): 22493254

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 155, 310, 341, 682, 1705, 3410, 6421, 12842, 32105, 64210, 70631, 141262, 199051, 353155, 398102, 706310, 995255, 1990510, 2189561, 4379122, 10947805, 21895610]

約数ペア:

[(1, 21895610), (2, 10947805), (5, 4379122), (10, 2189561), (11, 1990510), (22, 995255), (31, 706310), (55, 398102), (62, 353155), (110, 199051), (155, 141262), (310, 70631), (341, 64210), (682, 32105), (1705, 12842), (3410, 6421)]