20184423

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 34128864

約数和(自身を除く): 13944441

約数列:

[1, 3, 7, 17, 21, 41, 49, 51, 119, 123, 147, 197, 287, 357, 591, 697, 833, 861, 1379, 2009, 2091, 2499, 3349, 4137, 4879, 6027, 8077, 9653, 10047, 14637, 23443, 24231, 28959, 34153, 56539, 70329, 102459, 137309, 164101, 169617, 395773, 411927, 492303, 961163, 1187319, 2883489, 6728141, 20184423]

約数ペア:

[(1, 20184423), (3, 6728141), (7, 2883489), (17, 1187319), (21, 961163), (41, 492303), (49, 411927), (51, 395773), (119, 169617), (123, 164101), (147, 137309), (197, 102459), (287, 70329), (357, 56539), (591, 34153), (697, 28959), (833, 24231), (861, 23443), (1379, 14637), (2009, 10047), (2091, 9653), (2499, 8077), (3349, 6027), (4137, 4879)]