81301912

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{2131}}^1$

素因数の和:2407

約数の個数: 32

約数和(自身を含む): 161179200

約数和(自身を除く): 79877288

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 251, 502, 1004, 2008, 2131, 4262, 4769, 8524, 9538, 17048, 19076, 38152, 40489, 80978, 161956, 323912, 534881, 1069762, 2139524, 4279048, 10162739, 20325478, 40650956, 81301912]

約数ペア:

[(1, 81301912), (2, 40650956), (4, 20325478), (8, 10162739), (19, 4279048), (38, 2139524), (76, 1069762), (152, 534881), (251, 323912), (502, 161956), (1004, 80978), (2008, 40489), (2131, 38152), (4262, 19076), (4769, 17048), (8524, 9538)]