206820020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{647}}^1\times {\mathrm{1453}}^1$

素因数の和:2120

約数の個数: 48

約数和(自身を含む): 474864768

約数和(自身を除く): 268044748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 647, 1294, 1453, 2588, 2906, 3235, 5812, 6470, 7117, 7265, 12940, 14234, 14530, 15983, 28468, 29060, 31966, 35585, 63932, 71170, 79915, 142340, 159830, 319660, 940091, 1880182, 3760364, 4700455, 9400910, 10341001, 18801820, 20682002, 41364004, 51705005, 103410010, 206820020]

約数ペア:

[(1, 206820020), (2, 103410010), (4, 51705005), (5, 41364004), (10, 20682002), (11, 18801820), (20, 10341001), (22, 9400910), (44, 4700455), (55, 3760364), (110, 1880182), (220, 940091), (647, 319660), (1294, 159830), (1453, 142340), (2588, 79915), (2906, 71170), (3235, 63932), (5812, 35585), (6470, 31966), (7117, 29060), (7265, 28468), (12940, 15983), (14234, 14530)]