638595459

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 970342464

約数和(自身を除く): 331747005

約数列:

[1, 3, 9, 41, 73, 123, 151, 157, 219, 369, 453, 471, 657, 1359, 1413, 2993, 6191, 6437, 8979, 11023, 11461, 18573, 19311, 23707, 26937, 33069, 34383, 55719, 57933, 71121, 99207, 103149, 213363, 451943, 469901, 971987, 1355829, 1409703, 1730611, 2915961, 4067487, 4229109, 5191833, 8747883, 15575499, 70955051, 212865153, 638595459]

約数ペア:

[(1, 638595459), (3, 212865153), (9, 70955051), (41, 15575499), (73, 8747883), (123, 5191833), (151, 4229109), (157, 4067487), (219, 2915961), (369, 1730611), (453, 1409703), (471, 1355829), (657, 971987), (1359, 469901), (1413, 451943), (2993, 213363), (6191, 103149), (6437, 99207), (8979, 71121), (11023, 57933), (11461, 55719), (18573, 34383), (19311, 33069), (23707, 26937)]