20845760

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5011}}^1$

素因数の和:5041

約数の個数: 56

約数和(自身を含む): 53468016

約数和(自身を除く): 32622256

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 5011, 10022, 20044, 25055, 40088, 50110, 65143, 80176, 100220, 130286, 160352, 200440, 260572, 320704, 325715, 400880, 521144, 651430, 801760, 1042288, 1302860, 1603520, 2084576, 2605720, 4169152, 5211440, 10422880, 20845760]

約数ペア:

[(1, 20845760), (2, 10422880), (4, 5211440), (5, 4169152), (8, 2605720), (10, 2084576), (13, 1603520), (16, 1302860), (20, 1042288), (26, 801760), (32, 651430), (40, 521144), (52, 400880), (64, 325715), (65, 320704), (80, 260572), (104, 200440), (130, 160352), (160, 130286), (208, 100220), (260, 80176), (320, 65143), (416, 50110), (520, 40088), (832, 25055), (1040, 20044), (2080, 10022), (4160, 5011)]