18607888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{653}}^1$

素因数の和:811

約数の個数: 40

約数和(自身を含む): 39169368

約数和(自身を除く): 20561480

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 137, 208, 274, 548, 653, 1096, 1306, 1781, 2192, 2612, 3562, 5224, 7124, 8489, 10448, 14248, 16978, 28496, 33956, 67912, 89461, 135824, 178922, 357844, 715688, 1162993, 1431376, 2325986, 4651972, 9303944, 18607888]

約数ペア:

[(1, 18607888), (2, 9303944), (4, 4651972), (8, 2325986), (13, 1431376), (16, 1162993), (26, 715688), (52, 357844), (104, 178922), (137, 135824), (208, 89461), (274, 67912), (548, 33956), (653, 28496), (1096, 16978), (1306, 14248), (1781, 10448), (2192, 8489), (2612, 7124), (3562, 5224)]