21717850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{5641}}^1$

素因数の和:5671

約数の個数: 48

約数和(自身を含む): 50371776

約数和(自身を除く): 28653926

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 175, 275, 350, 385, 550, 770, 1925, 3850, 5641, 11282, 28205, 39487, 56410, 62051, 78974, 124102, 141025, 197435, 282050, 310255, 394870, 434357, 620510, 868714, 987175, 1551275, 1974350, 2171785, 3102550, 4343570, 10858925, 21717850]

約数ペア:

[(1, 21717850), (2, 10858925), (5, 4343570), (7, 3102550), (10, 2171785), (11, 1974350), (14, 1551275), (22, 987175), (25, 868714), (35, 620510), (50, 434357), (55, 394870), (70, 310255), (77, 282050), (110, 197435), (154, 141025), (175, 124102), (275, 78974), (350, 62051), (385, 56410), (550, 39487), (770, 28205), (1925, 11282), (3850, 5641)]