18981655

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1049}}^1$

素因数の和:1119

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 10048745

約数列:

[1, 5, 7, 11, 35, 47, 55, 77, 235, 329, 385, 517, 1049, 1645, 2585, 3619, 5245, 7343, 11539, 18095, 36715, 49303, 57695, 80773, 246515, 345121, 403865, 542333, 1725605, 2711665, 3796331, 18981655]

約数ペア:

[(1, 18981655), (5, 3796331), (7, 2711665), (11, 1725605), (35, 542333), (47, 403865), (55, 345121), (77, 246515), (235, 80773), (329, 57695), (385, 49303), (517, 36715), (1049, 18095), (1645, 11539), (2585, 7343), (3619, 5245)]