20376016

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 41013000

約数和(自身を除く): 20636984

約数列:

[1, 2, 4, 8, 16, 41, 82, 89, 164, 178, 328, 349, 356, 656, 698, 712, 1396, 1424, 2792, 3649, 5584, 7298, 14309, 14596, 28618, 29192, 31061, 57236, 58384, 62122, 114472, 124244, 228944, 248488, 496976, 1273501, 2547002, 5094004, 10188008, 20376016]

約数ペア:

[(1, 20376016), (2, 10188008), (4, 5094004), (8, 2547002), (16, 1273501), (41, 496976), (82, 248488), (89, 228944), (164, 124244), (178, 114472), (328, 62122), (349, 58384), (356, 57236), (656, 31061), (698, 29192), (712, 28618), (1396, 14596), (1424, 14309), (2792, 7298), (3649, 5584)]