19427900

素因数分解:

$2^2\times 5^2\times {\mathrm{173}}^1\times {\mathrm{1123}}^1$

素因数の和:1310

約数の個数: 36

約数和(自身を含む): 42439992

約数和(自身を除く): 23012092

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 173, 346, 692, 865, 1123, 1730, 2246, 3460, 4325, 4492, 5615, 8650, 11230, 17300, 22460, 28075, 56150, 112300, 194279, 388558, 777116, 971395, 1942790, 3885580, 4856975, 9713950, 19427900]

約数ペア:

[(1, 19427900), (2, 9713950), (4, 4856975), (5, 3885580), (10, 1942790), (20, 971395), (25, 777116), (50, 388558), (100, 194279), (173, 112300), (346, 56150), (692, 28075), (865, 22460), (1123, 17300), (1730, 11230), (2246, 8650), (3460, 5615), (4325, 4492)]