18971900

素因数分解:

$2^2\times 5^2\times {\mathrm{193}}^1\times {\mathrm{983}}^1$

素因数の和:1190

約数の個数: 36

約数和(自身を含む): 41424432

約数和(自身を除く): 22452532

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 193, 386, 772, 965, 983, 1930, 1966, 3860, 3932, 4825, 4915, 9650, 9830, 19300, 19660, 24575, 49150, 98300, 189719, 379438, 758876, 948595, 1897190, 3794380, 4742975, 9485950, 18971900]

約数ペア:

[(1, 18971900), (2, 9485950), (4, 4742975), (5, 3794380), (10, 1897190), (20, 948595), (25, 758876), (50, 379438), (100, 189719), (193, 98300), (386, 49150), (772, 24575), (965, 19660), (983, 19300), (1930, 9830), (1966, 9650), (3860, 4915), (3932, 4825)]