20652775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 30935520

約数和(自身を除く): 10282745

約数列:

[1, 5, 11, 13, 25, 53, 55, 65, 109, 143, 265, 275, 325, 545, 583, 689, 715, 1199, 1325, 1417, 2725, 2915, 3445, 3575, 5777, 5995, 7085, 7579, 14575, 15587, 17225, 28885, 29975, 35425, 37895, 63547, 75101, 77935, 144425, 189475, 317735, 375505, 389675, 826111, 1588675, 1877525, 4130555, 20652775]

約数ペア:

[(1, 20652775), (5, 4130555), (11, 1877525), (13, 1588675), (25, 826111), (53, 389675), (55, 375505), (65, 317735), (109, 189475), (143, 144425), (265, 77935), (275, 75101), (325, 63547), (545, 37895), (583, 35425), (689, 29975), (715, 28885), (1199, 17225), (1325, 15587), (1417, 14575), (2725, 7579), (2915, 7085), (3445, 5995), (3575, 5777)]