18405556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 36303120

約数和(自身を除く): 17897564

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 89, 97, 164, 178, 194, 356, 388, 533, 1066, 1157, 1261, 2132, 2314, 2522, 3649, 3977, 4628, 5044, 7298, 7954, 8633, 14596, 15908, 17266, 34532, 47437, 51701, 94874, 103402, 112229, 189748, 206804, 224458, 353953, 448916, 707906, 1415812, 4601389, 9202778, 18405556]

約数ペア:

[(1, 18405556), (2, 9202778), (4, 4601389), (13, 1415812), (26, 707906), (41, 448916), (52, 353953), (82, 224458), (89, 206804), (97, 189748), (164, 112229), (178, 103402), (194, 94874), (356, 51701), (388, 47437), (533, 34532), (1066, 17266), (1157, 15908), (1261, 14596), (2132, 8633), (2314, 7954), (2522, 7298), (3649, 5044), (3977, 4628)]