21211212

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 57302784

約数和(自身を除く): 36091572

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 37, 43, 44, 66, 74, 86, 101, 111, 129, 132, 148, 172, 202, 222, 258, 303, 404, 407, 444, 473, 516, 606, 814, 946, 1111, 1212, 1221, 1419, 1591, 1628, 1892, 2222, 2442, 2838, 3182, 3333, 3737, 4343, 4444, 4773, 4884, 5676, 6364, 6666, 7474, 8686, 9546, 11211, 13029, 13332, 14948, 17372, 17501, 19092, 22422, 26058, 35002, 41107, 44844, 47773, 52116, 52503, 70004, 82214, 95546, 105006, 123321, 143319, 160691, 164428, 191092, 210012, 246642, 286638, 321382, 482073, 493284, 573276, 642764, 964146, 1767601, 1928292, 3535202, 5302803, 7070404, 10605606, 21211212]

約数ペア:

[(1, 21211212), (2, 10605606), (3, 7070404), (4, 5302803), (6, 3535202), (11, 1928292), (12, 1767601), (22, 964146), (33, 642764), (37, 573276), (43, 493284), (44, 482073), (66, 321382), (74, 286638), (86, 246642), (101, 210012), (111, 191092), (129, 164428), (132, 160691), (148, 143319), (172, 123321), (202, 105006), (222, 95546), (258, 82214), (303, 70004), (404, 52503), (407, 52116), (444, 47773), (473, 44844), (516, 41107), (606, 35002), (814, 26058), (946, 22422), (1111, 19092), (1212, 17501), (1221, 17372), (1419, 14948), (1591, 13332), (1628, 13029), (1892, 11211), (2222, 9546), (2442, 8686), (2838, 7474), (3182, 6666), (3333, 6364), (3737, 5676), (4343, 4884), (4444, 4773)]