81314696

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{157}}^1\times {\mathrm{641}}^1$

素因数の和:905

約数の個数: 32

約数和(自身を含む): 155197080

約数和(自身を除く): 73882384

約数列:

[1, 2, 4, 8, 101, 157, 202, 314, 404, 628, 641, 808, 1256, 1282, 2564, 5128, 15857, 31714, 63428, 64741, 100637, 126856, 129482, 201274, 258964, 402548, 517928, 805096, 10164337, 20328674, 40657348, 81314696]

約数ペア:

[(1, 81314696), (2, 40657348), (4, 20328674), (8, 10164337), (101, 805096), (157, 517928), (202, 402548), (314, 258964), (404, 201274), (628, 129482), (641, 126856), (808, 100637), (1256, 64741), (1282, 63428), (2564, 31714), (5128, 15857)]