18860500

素因数分解:

$2^2\times 5^3\times {\mathrm{67}}^1\times {\mathrm{563}}^1$

素因数の和:649

約数の個数: 48

約数和(自身を含む): 41880384

約数和(自身を除く): 23019884

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 67, 100, 125, 134, 250, 268, 335, 500, 563, 670, 1126, 1340, 1675, 2252, 2815, 3350, 5630, 6700, 8375, 11260, 14075, 16750, 28150, 33500, 37721, 56300, 70375, 75442, 140750, 150884, 188605, 281500, 377210, 754420, 943025, 1886050, 3772100, 4715125, 9430250, 18860500]

約数ペア:

[(1, 18860500), (2, 9430250), (4, 4715125), (5, 3772100), (10, 1886050), (20, 943025), (25, 754420), (50, 377210), (67, 281500), (100, 188605), (125, 150884), (134, 140750), (250, 75442), (268, 70375), (335, 56300), (500, 37721), (563, 33500), (670, 28150), (1126, 16750), (1340, 14075), (1675, 11260), (2252, 8375), (2815, 6700), (3350, 5630)]