20448351

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1553}}^1$

素因数の和:1596

約数の個数: 48

約数和(自身を含む): 38787840

約数和(自身を除く): 18339489

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 57, 63, 77, 99, 133, 171, 209, 231, 399, 627, 693, 1197, 1463, 1553, 1881, 4389, 4659, 10871, 13167, 13977, 17083, 29507, 32613, 51249, 88521, 97839, 119581, 153747, 206549, 265563, 324577, 358743, 619647, 973731, 1076229, 1858941, 2272039, 2921193, 6816117, 20448351]

約数ペア:

[(1, 20448351), (3, 6816117), (7, 2921193), (9, 2272039), (11, 1858941), (19, 1076229), (21, 973731), (33, 619647), (57, 358743), (63, 324577), (77, 265563), (99, 206549), (133, 153747), (171, 119581), (209, 97839), (231, 88521), (399, 51249), (627, 32613), (693, 29507), (1197, 17083), (1463, 13977), (1553, 13167), (1881, 10871), (4389, 4659)]