18787428

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{227}}^1$

素因数の和:278

約数の個数: 108

約数和(自身を含む): 55189680

約数和(自身を除く): 36402252

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 33, 36, 38, 44, 57, 66, 76, 99, 114, 121, 132, 171, 198, 209, 227, 228, 242, 342, 363, 396, 418, 454, 484, 627, 681, 684, 726, 836, 908, 1089, 1254, 1362, 1452, 1881, 2043, 2178, 2299, 2497, 2508, 2724, 3762, 4086, 4313, 4356, 4598, 4994, 6897, 7491, 7524, 8172, 8626, 9196, 9988, 12939, 13794, 14982, 17252, 20691, 22473, 25878, 27467, 27588, 29964, 38817, 41382, 44946, 47443, 51756, 54934, 77634, 82401, 82764, 89892, 94886, 109868, 142329, 155268, 164802, 189772, 247203, 284658, 329604, 426987, 494406, 521873, 569316, 853974, 988812, 1043746, 1565619, 1707948, 2087492, 3131238, 4696857, 6262476, 9393714, 18787428]

約数ペア:

[(1, 18787428), (2, 9393714), (3, 6262476), (4, 4696857), (6, 3131238), (9, 2087492), (11, 1707948), (12, 1565619), (18, 1043746), (19, 988812), (22, 853974), (33, 569316), (36, 521873), (38, 494406), (44, 426987), (57, 329604), (66, 284658), (76, 247203), (99, 189772), (114, 164802), (121, 155268), (132, 142329), (171, 109868), (198, 94886), (209, 89892), (227, 82764), (228, 82401), (242, 77634), (342, 54934), (363, 51756), (396, 47443), (418, 44946), (454, 41382), (484, 38817), (627, 29964), (681, 27588), (684, 27467), (726, 25878), (836, 22473), (908, 20691), (1089, 17252), (1254, 14982), (1362, 13794), (1452, 12939), (1881, 9988), (2043, 9196), (2178, 8626), (2299, 8172), (2497, 7524), (2508, 7491), (2724, 6897), (3762, 4994), (4086, 4598), (4313, 4356)]