21990210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1801}}^1$

素因数の和:1859

約数の個数: 64

約数和(自身を含む): 59163264

約数和(自身を除く): 37173054

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 37, 55, 66, 74, 110, 111, 165, 185, 222, 330, 370, 407, 555, 814, 1110, 1221, 1801, 2035, 2442, 3602, 4070, 5403, 6105, 9005, 10806, 12210, 18010, 19811, 27015, 39622, 54030, 59433, 66637, 99055, 118866, 133274, 198110, 199911, 297165, 333185, 399822, 594330, 666370, 733007, 999555, 1466014, 1999110, 2199021, 3665035, 4398042, 7330070, 10995105, 21990210]

約数ペア:

[(1, 21990210), (2, 10995105), (3, 7330070), (5, 4398042), (6, 3665035), (10, 2199021), (11, 1999110), (15, 1466014), (22, 999555), (30, 733007), (33, 666370), (37, 594330), (55, 399822), (66, 333185), (74, 297165), (110, 199911), (111, 198110), (165, 133274), (185, 118866), (222, 99055), (330, 66637), (370, 59433), (407, 54030), (555, 39622), (814, 27015), (1110, 19811), (1221, 18010), (1801, 12210), (2035, 10806), (2442, 9005), (3602, 6105), (4070, 5403)]