405748287

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{809}}^1$

素因数の和:1260

約数の個数: 48

約数和(自身を含む): 707616000

約数和(自身を除く): 301867713

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 419, 809, 1197, 1257, 2427, 2933, 3771, 5663, 7281, 7961, 8799, 15371, 16989, 23883, 26397, 46113, 50967, 55727, 71649, 107597, 138339, 167181, 322791, 338971, 501543, 968373, 1016913, 2372797, 3050739, 6440449, 7118391, 19321347, 21355173, 45083143, 57964041, 135249429, 405748287]

約数ペア:

[(1, 405748287), (3, 135249429), (7, 57964041), (9, 45083143), (19, 21355173), (21, 19321347), (57, 7118391), (63, 6440449), (133, 3050739), (171, 2372797), (399, 1016913), (419, 968373), (809, 501543), (1197, 338971), (1257, 322791), (2427, 167181), (2933, 138339), (3771, 107597), (5663, 71649), (7281, 55727), (7961, 50967), (8799, 46113), (15371, 26397), (16989, 23883)]