18979191

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1$

素因数の和:226

約数の個数: 80

約数和(自身を含む): 37635840

約数和(自身を除く): 18656649

約数列:

[1, 3, 7, 9, 11, 17, 21, 27, 33, 51, 63, 77, 81, 99, 119, 153, 179, 187, 189, 231, 297, 357, 459, 537, 561, 567, 693, 891, 1071, 1253, 1309, 1377, 1611, 1683, 1969, 2079, 3043, 3213, 3759, 3927, 4833, 5049, 5907, 6237, 9129, 9639, 11277, 11781, 13783, 14499, 15147, 17721, 21301, 27387, 33473, 33831, 35343, 41349, 53163, 63903, 82161, 100419, 101493, 106029, 124047, 159489, 191709, 234311, 246483, 301257, 372141, 575127, 702933, 903771, 1116423, 1725381, 2108799, 2711313, 6326397, 18979191]

約数ペア:

[(1, 18979191), (3, 6326397), (7, 2711313), (9, 2108799), (11, 1725381), (17, 1116423), (21, 903771), (27, 702933), (33, 575127), (51, 372141), (63, 301257), (77, 246483), (81, 234311), (99, 191709), (119, 159489), (153, 124047), (179, 106029), (187, 101493), (189, 100419), (231, 82161), (297, 63903), (357, 53163), (459, 41349), (537, 35343), (561, 33831), (567, 33473), (693, 27387), (891, 21301), (1071, 17721), (1253, 15147), (1309, 14499), (1377, 13783), (1611, 11781), (1683, 11277), (1969, 9639), (2079, 9129), (3043, 6237), (3213, 5907), (3759, 5049), (3927, 4833)]