19987770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1637}}^1$

素因数の和:1695

約数の個数: 64

約数和(自身を含む): 53778816

約数和(自身を除く): 33791046

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, 1637, 2035, 2442, 3274, 4070, 4911, 6105, 8185, 9822, 12210, 16370, 18007, 24555, 36014, 49110, 54021, 60569, 90035, 108042, 121138, 180070, 181707, 270105, 302845, 363414, 540210, 605690, 666259, 908535, 1332518, 1817070, 1998777, 3331295, 3997554, 6662590, 9993885, 19987770]

約数ペア:

[(1, 19987770), (2, 9993885), (3, 6662590), (5, 3997554), (6, 3331295), (10, 1998777), (11, 1817070), (15, 1332518), (22, 908535), (30, 666259), (33, 605690), (37, 540210), (55, 363414), (66, 302845), (74, 270105), (110, 181707), (111, 180070), (165, 121138), (185, 108042), (222, 90035), (330, 60569), (370, 54021), (407, 49110), (555, 36014), (814, 24555), (1110, 18007), (1221, 16370), (1637, 12210), (2035, 9822), (2442, 8185), (3274, 6105), (4070, 4911)]