20385956

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 38955840

約数和(自身を除く): 18569884

約数列:

[1, 2, 4, 29, 43, 58, 61, 67, 86, 116, 122, 134, 172, 244, 268, 1247, 1769, 1943, 2494, 2623, 2881, 3538, 3886, 4087, 4988, 5246, 5762, 7076, 7772, 8174, 10492, 11524, 16348, 76067, 83549, 118523, 152134, 167098, 175741, 237046, 304268, 334196, 351482, 474092, 702964, 5096489, 10192978, 20385956]

約数ペア:

[(1, 20385956), (2, 10192978), (4, 5096489), (29, 702964), (43, 474092), (58, 351482), (61, 334196), (67, 304268), (86, 237046), (116, 175741), (122, 167098), (134, 152134), (172, 118523), (244, 83549), (268, 76067), (1247, 16348), (1769, 11524), (1943, 10492), (2494, 8174), (2623, 7772), (2881, 7076), (3538, 5762), (3886, 5246), (4087, 4988)]