21163142

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2$

素因数の和:106

約数の個数: 72

約数和(自身を含む): 44375184

約数和(自身を除く): 23212042

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 31, 62, 77, 91, 121, 143, 154, 182, 217, 242, 286, 341, 403, 434, 682, 806, 847, 961, 1001, 1573, 1694, 1922, 2002, 2387, 2821, 3146, 3751, 4433, 4774, 5642, 6727, 7502, 8866, 10571, 11011, 12493, 13454, 21142, 22022, 24986, 26257, 31031, 48763, 52514, 62062, 73997, 87451, 97526, 116281, 137423, 147994, 174902, 232562, 274846, 341341, 682682, 813967, 961961, 1511653, 1627934, 1923922, 3023306, 10581571, 21163142]

約数ペア:

[(1, 21163142), (2, 10581571), (7, 3023306), (11, 1923922), (13, 1627934), (14, 1511653), (22, 961961), (26, 813967), (31, 682682), (62, 341341), (77, 274846), (91, 232562), (121, 174902), (143, 147994), (154, 137423), (182, 116281), (217, 97526), (242, 87451), (286, 73997), (341, 62062), (403, 52514), (434, 48763), (682, 31031), (806, 26257), (847, 24986), (961, 22022), (1001, 21142), (1573, 13454), (1694, 12493), (1922, 11011), (2002, 10571), (2387, 8866), (2821, 7502), (3146, 6727), (3751, 5642), (4433, 4774)]