20126960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:430

約数の個数: 80

約数和(自身を含む): 54091776

約数和(自身を除く): 33964816

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 280, 283, 508, 560, 566, 635, 889, 1016, 1132, 1270, 1415, 1778, 1981, 2032, 2264, 2540, 2830, 3556, 3962, 4445, 4528, 5080, 5660, 7112, 7924, 8890, 9905, 10160, 11320, 14224, 15848, 17780, 19810, 22640, 31696, 35560, 35941, 39620, 71120, 71882, 79240, 143764, 158480, 179705, 251587, 287528, 359410, 503174, 575056, 718820, 1006348, 1257935, 1437640, 2012696, 2515870, 2875280, 4025392, 5031740, 10063480, 20126960]

約数ペア:

[(1, 20126960), (2, 10063480), (4, 5031740), (5, 4025392), (7, 2875280), (8, 2515870), (10, 2012696), (14, 1437640), (16, 1257935), (20, 1006348), (28, 718820), (35, 575056), (40, 503174), (56, 359410), (70, 287528), (80, 251587), (112, 179705), (127, 158480), (140, 143764), (254, 79240), (280, 71882), (283, 71120), (508, 39620), (560, 35941), (566, 35560), (635, 31696), (889, 22640), (1016, 19810), (1132, 17780), (1270, 15848), (1415, 14224), (1778, 11320), (1981, 10160), (2032, 9905), (2264, 8890), (2540, 7924), (2830, 7112), (3556, 5660), (3962, 5080), (4445, 4528)]