81403154

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{641}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 143479296

約数和(自身を除く): 62076142

約数列:

[1, 2, 7, 14, 47, 94, 193, 329, 386, 641, 658, 1282, 1351, 2702, 4487, 8974, 9071, 18142, 30127, 60254, 63497, 123713, 126994, 210889, 247426, 421778, 865991, 1731982, 5814511, 11629022, 40701577, 81403154]

約数ペア:

[(1, 81403154), (2, 40701577), (7, 11629022), (14, 5814511), (47, 1731982), (94, 865991), (193, 421778), (329, 247426), (386, 210889), (641, 126994), (658, 123713), (1282, 63497), (1351, 60254), (2702, 30127), (4487, 18142), (8974, 9071)]