18915856

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{19381}}^1$

素因数の和:19450

約数の個数: 20

約数和(自身を含む): 37252204

約数和(自身を除く): 18336348

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 19381, 38762, 77524, 155048, 310096, 1182241, 2364482, 4728964, 9457928, 18915856]

約数ペア:

[(1, 18915856), (2, 9457928), (4, 4728964), (8, 2364482), (16, 1182241), (61, 310096), (122, 155048), (244, 77524), (488, 38762), (976, 19381)]