28014987

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 52899840

約数和(自身を除く): 24884853

約数列:

[1, 3, 7, 11, 13, 19, 21, 33, 39, 57, 77, 91, 133, 143, 209, 231, 247, 273, 399, 429, 491, 627, 741, 1001, 1463, 1473, 1729, 2717, 3003, 3437, 4389, 5187, 5401, 6383, 8151, 9329, 10311, 16203, 19019, 19149, 27987, 37807, 44681, 57057, 65303, 70213, 102619, 113421, 121277, 134043, 195909, 210639, 307857, 363831, 491491, 718333, 848939, 1334047, 1474473, 2154999, 2546817, 4002141, 9338329, 28014987]

約数ペア:

[(1, 28014987), (3, 9338329), (7, 4002141), (11, 2546817), (13, 2154999), (19, 1474473), (21, 1334047), (33, 848939), (39, 718333), (57, 491491), (77, 363831), (91, 307857), (133, 210639), (143, 195909), (209, 134043), (231, 121277), (247, 113421), (273, 102619), (399, 70213), (429, 65303), (491, 57057), (627, 44681), (741, 37807), (1001, 27987), (1463, 19149), (1473, 19019), (1729, 16203), (2717, 10311), (3003, 9329), (3437, 8151), (4389, 6383), (5187, 5401)]