128666979

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 220059840

約数和(自身を除く): 91392861

約数列:

[1, 3, 7, 9, 21, 41, 63, 109, 123, 287, 327, 369, 457, 763, 861, 981, 1371, 2289, 2583, 3199, 4113, 4469, 6867, 9597, 13407, 18737, 28791, 31283, 40221, 49813, 56211, 93849, 131159, 149439, 168633, 281547, 348691, 393477, 448317, 1046073, 1180431, 2042333, 3138219, 6126999, 14296331, 18380997, 42888993, 128666979]

約数ペア:

[(1, 128666979), (3, 42888993), (7, 18380997), (9, 14296331), (21, 6126999), (41, 3138219), (63, 2042333), (109, 1180431), (123, 1046073), (287, 448317), (327, 393477), (369, 348691), (457, 281547), (763, 168633), (861, 149439), (981, 131159), (1371, 93849), (2289, 56211), (2583, 49813), (3199, 40221), (4113, 31283), (4469, 28791), (6867, 18737), (9597, 13407)]