18707420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{9643}}^1$

素因数の和:9749

約数の個数: 24

約数和(自身を含む): 39694704

約数和(自身を除く): 20987284

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 9643, 19286, 38572, 48215, 96430, 192860, 935371, 1870742, 3741484, 4676855, 9353710, 18707420]

約数ペア:

[(1, 18707420), (2, 9353710), (4, 4676855), (5, 3741484), (10, 1870742), (20, 935371), (97, 192860), (194, 96430), (388, 48215), (485, 38572), (970, 19286), (1940, 9643)]