81507376

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{547}}^1$

素因数の和:761

約数の個数: 40

約数和(自身を含む): 161725760

約数和(自身を除く): 80218384

約数列:

[1, 2, 4, 8, 16, 67, 134, 139, 268, 278, 536, 547, 556, 1072, 1094, 1112, 2188, 2224, 4376, 8752, 9313, 18626, 36649, 37252, 73298, 74504, 76033, 146596, 149008, 152066, 293192, 304132, 586384, 608264, 1216528, 5094211, 10188422, 20376844, 40753688, 81507376]

約数ペア:

[(1, 81507376), (2, 40753688), (4, 20376844), (8, 10188422), (16, 5094211), (67, 1216528), (134, 608264), (139, 586384), (268, 304132), (278, 293192), (536, 152066), (547, 149008), (556, 146596), (1072, 76033), (1094, 74504), (1112, 73298), (2188, 37252), (2224, 36649), (4376, 18626), (8752, 9313)]