278386101

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:631

約数の個数: 72

約数和(自身を含む): 503216064

約数和(自身を除く): 224829963

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 71, 119, 147, 153, 213, 357, 441, 497, 523, 639, 833, 1071, 1207, 1491, 1569, 2499, 3479, 3621, 3661, 4473, 4707, 7497, 8449, 8891, 10437, 10863, 10983, 25347, 25627, 26673, 31311, 32949, 37133, 59143, 62237, 76041, 76881, 80019, 111399, 177429, 186711, 230643, 259931, 334197, 435659, 532287, 560133, 631261, 779793, 1306977, 1819517, 1893783, 2339379, 3920931, 4418827, 5458551, 5681349, 13256481, 16375653, 30931789, 39769443, 92795367, 278386101]

約数ペア:

[(1, 278386101), (3, 92795367), (7, 39769443), (9, 30931789), (17, 16375653), (21, 13256481), (49, 5681349), (51, 5458551), (63, 4418827), (71, 3920931), (119, 2339379), (147, 1893783), (153, 1819517), (213, 1306977), (357, 779793), (441, 631261), (497, 560133), (523, 532287), (639, 435659), (833, 334197), (1071, 259931), (1207, 230643), (1491, 186711), (1569, 177429), (2499, 111399), (3479, 80019), (3621, 76881), (3661, 76041), (4473, 62237), (4707, 59143), (7497, 37133), (8449, 32949), (8891, 31311), (10437, 26673), (10863, 25627), (10983, 25347)]