20751280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23581}}^1$

素因数の和:23605

約数の個数: 40

約数和(自身を含む): 52635024

約数和(自身を除く): 31883744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23581, 47162, 94324, 117905, 188648, 235810, 259391, 377296, 471620, 518782, 943240, 1037564, 1296955, 1886480, 2075128, 2593910, 4150256, 5187820, 10375640, 20751280]

約数ペア:

[(1, 20751280), (2, 10375640), (4, 5187820), (5, 4150256), (8, 2593910), (10, 2075128), (11, 1886480), (16, 1296955), (20, 1037564), (22, 943240), (40, 518782), (44, 471620), (55, 377296), (80, 259391), (88, 235810), (110, 188648), (176, 117905), (220, 94324), (440, 47162), (880, 23581)]