81507965

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{1667}}^1$

素因数の和:1817

約数の個数: 32

約数和(自身を含む): 122978304

約数和(自身を除く): 41470339

約数列:

[1, 5, 7, 11, 35, 55, 77, 127, 385, 635, 889, 1397, 1667, 4445, 6985, 8335, 9779, 11669, 18337, 48895, 58345, 91685, 128359, 211709, 641795, 1058545, 1481963, 2328799, 7409815, 11643995, 16301593, 81507965]

約数ペア:

[(1, 81507965), (5, 16301593), (7, 11643995), (11, 7409815), (35, 2328799), (55, 1481963), (77, 1058545), (127, 641795), (385, 211709), (635, 128359), (889, 91685), (1397, 58345), (1667, 48895), (4445, 18337), (6985, 11669), (8335, 9779)]