20697378

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 47416320

約数和(自身を除く): 26718942

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 78, 83, 138, 139, 166, 249, 278, 299, 417, 498, 598, 834, 897, 1079, 1794, 1807, 1909, 2158, 3197, 3237, 3614, 3818, 5421, 5727, 6394, 6474, 9591, 10842, 11454, 11537, 19182, 23074, 24817, 34611, 41561, 49634, 69222, 74451, 83122, 124683, 148902, 149981, 249366, 265351, 299962, 449943, 530702, 796053, 899886, 1592106, 3449563, 6899126, 10348689, 20697378]

約数ペア:

[(1, 20697378), (2, 10348689), (3, 6899126), (6, 3449563), (13, 1592106), (23, 899886), (26, 796053), (39, 530702), (46, 449943), (69, 299962), (78, 265351), (83, 249366), (138, 149981), (139, 148902), (166, 124683), (249, 83122), (278, 74451), (299, 69222), (417, 49634), (498, 41561), (598, 34611), (834, 24817), (897, 23074), (1079, 19182), (1794, 11537), (1807, 11454), (1909, 10842), (2158, 9591), (3197, 6474), (3237, 6394), (3614, 5727), (3818, 5421)]