81396784

素因数分解:

$2^4\times 7^1\times {\mathrm{223}}^1\times {\mathrm{3259}}^1$

素因数の和:3497

約数の個数: 40

約数和(自身を含む): 181099520

約数和(自身を除く): 99702736

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 223, 446, 892, 1561, 1784, 3122, 3259, 3568, 6244, 6518, 12488, 13036, 22813, 24976, 26072, 45626, 52144, 91252, 182504, 365008, 726757, 1453514, 2907028, 5087299, 5814056, 10174598, 11628112, 20349196, 40698392, 81396784]

約数ペア:

[(1, 81396784), (2, 40698392), (4, 20349196), (7, 11628112), (8, 10174598), (14, 5814056), (16, 5087299), (28, 2907028), (56, 1453514), (112, 726757), (223, 365008), (446, 182504), (892, 91252), (1561, 52144), (1784, 45626), (3122, 26072), (3259, 24976), (3568, 22813), (6244, 13036), (6518, 12488)]