18863608

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 38682000

約数和(自身を除く): 19818392

約数列:

[1, 2, 4, 8, 17, 34, 41, 68, 82, 136, 164, 199, 289, 328, 398, 578, 697, 796, 1156, 1394, 1592, 2312, 2788, 3383, 5576, 6766, 8159, 11849, 13532, 16318, 23698, 27064, 32636, 47396, 57511, 65272, 94792, 115022, 138703, 230044, 277406, 460088, 554812, 1109624, 2357951, 4715902, 9431804, 18863608]

約数ペア:

[(1, 18863608), (2, 9431804), (4, 4715902), (8, 2357951), (17, 1109624), (34, 554812), (41, 460088), (68, 277406), (82, 230044), (136, 138703), (164, 115022), (199, 94792), (289, 65272), (328, 57511), (398, 47396), (578, 32636), (697, 27064), (796, 23698), (1156, 16318), (1394, 13532), (1592, 11849), (2312, 8159), (2788, 6766), (3383, 5576)]