20504211

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 36556800

約数和(自身を除く): 16052589

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 59, 67, 91, 133, 177, 201, 247, 273, 399, 413, 469, 741, 767, 871, 1121, 1239, 1273, 1407, 1729, 2301, 2613, 3363, 3819, 3953, 5187, 5369, 6097, 7847, 8911, 11859, 14573, 16107, 16549, 18291, 23541, 26733, 27671, 43719, 49647, 51389, 75107, 83013, 102011, 115843, 154167, 225321, 306033, 347529, 359723, 525749, 976391, 1079169, 1577247, 2929173, 6834737, 20504211]

約数ペア:

[(1, 20504211), (3, 6834737), (7, 2929173), (13, 1577247), (19, 1079169), (21, 976391), (39, 525749), (57, 359723), (59, 347529), (67, 306033), (91, 225321), (133, 154167), (177, 115843), (201, 102011), (247, 83013), (273, 75107), (399, 51389), (413, 49647), (469, 43719), (741, 27671), (767, 26733), (871, 23541), (1121, 18291), (1239, 16549), (1273, 16107), (1407, 14573), (1729, 11859), (2301, 8911), (2613, 7847), (3363, 6097), (3819, 5369), (3953, 5187)]