18943306

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:286

約数の個数: 32

約数和(自身を含む): 31033728

約数和(自身を除く): 12090422

約数列:

[1, 2, 23, 43, 46, 61, 86, 122, 157, 314, 989, 1403, 1978, 2623, 2806, 3611, 5246, 6751, 7222, 9577, 13502, 19154, 60329, 120658, 155273, 220271, 310546, 411811, 440542, 823622, 9471653, 18943306]

約数ペア:

[(1, 18943306), (2, 9471653), (23, 823622), (43, 440542), (46, 411811), (61, 310546), (86, 220271), (122, 155273), (157, 120658), (314, 60329), (989, 19154), (1403, 13502), (1978, 9577), (2623, 7222), (2806, 6751), (3611, 5246)]