81756464

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{36761}}^1$

素因数の和:36908

約数の個数: 20

約数和(自身を含む): 159547080

約数和(自身を除く): 77790616

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 36761, 73522, 147044, 294088, 588176, 5109779, 10219558, 20439116, 40878232, 81756464]

約数ペア:

[(1, 81756464), (2, 40878232), (4, 20439116), (8, 10219558), (16, 5109779), (139, 588176), (278, 294088), (556, 147044), (1112, 73522), (2224, 36761)]