21735560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7057}}^1$

素因数の和:7086

約数の個数: 64

約数和(自身を含む): 60981120

約数和(自身を除く): 39245560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 7057, 14114, 28228, 35285, 49399, 56456, 70570, 77627, 98798, 141140, 155254, 197596, 246995, 282280, 310508, 388135, 395192, 493990, 543389, 621016, 776270, 987980, 1086778, 1552540, 1975960, 2173556, 2716945, 3105080, 4347112, 5433890, 10867780, 21735560]

約数ペア:

[(1, 21735560), (2, 10867780), (4, 5433890), (5, 4347112), (7, 3105080), (8, 2716945), (10, 2173556), (11, 1975960), (14, 1552540), (20, 1086778), (22, 987980), (28, 776270), (35, 621016), (40, 543389), (44, 493990), (55, 395192), (56, 388135), (70, 310508), (77, 282280), (88, 246995), (110, 197596), (140, 155254), (154, 141140), (220, 98798), (280, 77627), (308, 70570), (385, 56456), (440, 49399), (616, 35285), (770, 28228), (1540, 14114), (3080, 7057)]