18483998

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:153

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 16352482

約数列:

[1, 2, 13, 17, 19, 26, 31, 34, 38, 62, 71, 142, 221, 247, 323, 403, 442, 494, 527, 589, 646, 806, 923, 1054, 1178, 1207, 1349, 1846, 2201, 2414, 2698, 4199, 4402, 6851, 7657, 8398, 10013, 13702, 15314, 15691, 17537, 20026, 22933, 28613, 31382, 35074, 37417, 41819, 45866, 57226, 74834, 83638, 130169, 260338, 298129, 486421, 543647, 596258, 710923, 972842, 1087294, 1421846, 9241999, 18483998]

約数ペア:

[(1, 18483998), (2, 9241999), (13, 1421846), (17, 1087294), (19, 972842), (26, 710923), (31, 596258), (34, 543647), (38, 486421), (62, 298129), (71, 260338), (142, 130169), (221, 83638), (247, 74834), (323, 57226), (403, 45866), (442, 41819), (494, 37417), (527, 35074), (589, 31382), (646, 28613), (806, 22933), (923, 20026), (1054, 17537), (1178, 15691), (1207, 15314), (1349, 13702), (1846, 10013), (2201, 8398), (2414, 7657), (2698, 6851), (4199, 4402)]