18906368

素因数分解:

$2^8\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:84

約数の個数: 108

約数和(自身を含む): 44886240

約数和(自身を除く): 25979872

約数列:

[1, 2, 4, 8, 13, 16, 19, 23, 26, 32, 38, 46, 52, 64, 76, 92, 104, 128, 152, 169, 184, 208, 247, 256, 299, 304, 338, 368, 416, 437, 494, 598, 608, 676, 736, 832, 874, 988, 1196, 1216, 1352, 1472, 1664, 1748, 1976, 2392, 2432, 2704, 2944, 3211, 3328, 3496, 3887, 3952, 4784, 4864, 5408, 5681, 5888, 6422, 6992, 7774, 7904, 9568, 10816, 11362, 12844, 13984, 15548, 15808, 19136, 21632, 22724, 25688, 27968, 31096, 31616, 38272, 43264, 45448, 51376, 55936, 62192, 63232, 73853, 76544, 90896, 102752, 111872, 124384, 147706, 181792, 205504, 248768, 295412, 363584, 411008, 497536, 590824, 727168, 822016, 995072, 1181648, 1454336, 2363296, 4726592, 9453184, 18906368]

約数ペア:

[(1, 18906368), (2, 9453184), (4, 4726592), (8, 2363296), (13, 1454336), (16, 1181648), (19, 995072), (23, 822016), (26, 727168), (32, 590824), (38, 497536), (46, 411008), (52, 363584), (64, 295412), (76, 248768), (92, 205504), (104, 181792), (128, 147706), (152, 124384), (169, 111872), (184, 102752), (208, 90896), (247, 76544), (256, 73853), (299, 63232), (304, 62192), (338, 55936), (368, 51376), (416, 45448), (437, 43264), (494, 38272), (598, 31616), (608, 31096), (676, 27968), (736, 25688), (832, 22724), (874, 21632), (988, 19136), (1196, 15808), (1216, 15548), (1352, 13984), (1472, 12844), (1664, 11362), (1748, 10816), (1976, 9568), (2392, 7904), (2432, 7774), (2704, 6992), (2944, 6422), (3211, 5888), (3328, 5681), (3496, 5408), (3887, 4864), (3952, 4784)]