19789154

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 39923712

約数和(自身を除く): 20134558

約数列:

[1, 2, 7, 11, 14, 22, 23, 37, 46, 74, 77, 151, 154, 161, 253, 259, 302, 322, 407, 506, 518, 814, 851, 1057, 1661, 1702, 1771, 2114, 2849, 3322, 3473, 3542, 5587, 5698, 5957, 6946, 9361, 11174, 11627, 11914, 18722, 23254, 24311, 38203, 39109, 48622, 61457, 65527, 76406, 78218, 122914, 128501, 131054, 257002, 267421, 430199, 534842, 860398, 899507, 1413511, 1799014, 2827022, 9894577, 19789154]

約数ペア:

[(1, 19789154), (2, 9894577), (7, 2827022), (11, 1799014), (14, 1413511), (22, 899507), (23, 860398), (37, 534842), (46, 430199), (74, 267421), (77, 257002), (151, 131054), (154, 128501), (161, 122914), (253, 78218), (259, 76406), (302, 65527), (322, 61457), (407, 48622), (506, 39109), (518, 38203), (814, 24311), (851, 23254), (1057, 18722), (1661, 11914), (1702, 11627), (1771, 11174), (2114, 9361), (2849, 6946), (3322, 5957), (3473, 5698), (3542, 5587)]