21490932

素因数分解:

$2^2\times 3^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{499}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 52136000

約数和(自身を除く): 30645068

約数列:

[1, 2, 3, 4, 6, 12, 37, 74, 97, 111, 148, 194, 222, 291, 388, 444, 499, 582, 998, 1164, 1497, 1996, 2994, 3589, 5988, 7178, 10767, 14356, 18463, 21534, 36926, 43068, 48403, 55389, 73852, 96806, 110778, 145209, 193612, 221556, 290418, 580836, 1790911, 3581822, 5372733, 7163644, 10745466, 21490932]

約数ペア:

[(1, 21490932), (2, 10745466), (3, 7163644), (4, 5372733), (6, 3581822), (12, 1790911), (37, 580836), (74, 290418), (97, 221556), (111, 193612), (148, 145209), (194, 110778), (222, 96806), (291, 73852), (388, 55389), (444, 48403), (499, 43068), (582, 36926), (998, 21534), (1164, 18463), (1497, 14356), (1996, 10767), (2994, 7178), (3589, 5988)]