81270910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{2719}}^1$

素因数の和:2801

約数の個数: 48

約数和(自身を含む): 173024640

約数和(自身を除く): 91753730

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 61, 70, 98, 122, 245, 305, 427, 490, 610, 854, 2135, 2719, 2989, 4270, 5438, 5978, 13595, 14945, 19033, 27190, 29890, 38066, 95165, 133231, 165859, 190330, 266462, 331718, 666155, 829295, 1161013, 1332310, 1658590, 2322026, 5805065, 8127091, 11610130, 16254182, 40635455, 81270910]

約数ペア:

[(1, 81270910), (2, 40635455), (5, 16254182), (7, 11610130), (10, 8127091), (14, 5805065), (35, 2322026), (49, 1658590), (61, 1332310), (70, 1161013), (98, 829295), (122, 666155), (245, 331718), (305, 266462), (427, 190330), (490, 165859), (610, 133231), (854, 95165), (2135, 38066), (2719, 29890), (2989, 27190), (4270, 19033), (5438, 14945), (5978, 13595)]