19945604

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 41287680

約数和(自身を除く): 21342076

約数列:

[1, 2, 4, 7, 14, 28, 71, 79, 127, 142, 158, 254, 284, 316, 497, 508, 553, 889, 994, 1106, 1778, 1988, 2212, 3556, 5609, 9017, 10033, 11218, 18034, 20066, 22436, 36068, 39263, 40132, 63119, 70231, 78526, 126238, 140462, 157052, 252476, 280924, 712343, 1424686, 2849372, 4986401, 9972802, 19945604]

約数ペア:

[(1, 19945604), (2, 9972802), (4, 4986401), (7, 2849372), (14, 1424686), (28, 712343), (71, 280924), (79, 252476), (127, 157052), (142, 140462), (158, 126238), (254, 78526), (284, 70231), (316, 63119), (497, 40132), (508, 39263), (553, 36068), (889, 22436), (994, 20066), (1106, 18034), (1778, 11218), (1988, 10033), (2212, 9017), (3556, 5609)]