20709100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{5051}}^1$

素因数の和:5106

約数の個数: 36

約数和(自身を含む): 46043928

約数和(自身を除く): 25334828

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 5051, 10102, 20204, 25255, 50510, 101020, 126275, 207091, 252550, 414182, 505100, 828364, 1035455, 2070910, 4141820, 5177275, 10354550, 20709100]

約数ペア:

[(1, 20709100), (2, 10354550), (4, 5177275), (5, 4141820), (10, 2070910), (20, 1035455), (25, 828364), (41, 505100), (50, 414182), (82, 252550), (100, 207091), (164, 126275), (205, 101020), (410, 50510), (820, 25255), (1025, 20204), (2050, 10102), (4100, 5051)]