18780272

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2297}}^1$

素因数の和:2385

約数の個数: 40

約数和(自身を含む): 42172896

約数和(自身を除く): 23392624

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 112, 146, 292, 511, 584, 1022, 1168, 2044, 2297, 4088, 4594, 8176, 9188, 16079, 18376, 32158, 36752, 64316, 128632, 167681, 257264, 335362, 670724, 1173767, 1341448, 2347534, 2682896, 4695068, 9390136, 18780272]

約数ペア:

[(1, 18780272), (2, 9390136), (4, 4695068), (7, 2682896), (8, 2347534), (14, 1341448), (16, 1173767), (28, 670724), (56, 335362), (73, 257264), (112, 167681), (146, 128632), (292, 64316), (511, 36752), (584, 32158), (1022, 18376), (1168, 16079), (2044, 9188), (2297, 8176), (4088, 4594)]