19986404

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{13841}}^1$

素因数の和:13883

約数の個数: 18

約数和(自身を含む): 36916614

約数和(自身を除く): 16930210

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 13841, 27682, 55364, 262979, 525958, 1051916, 4996601, 9993202, 19986404]

約数ペア:

[(1, 19986404), (2, 9993202), (4, 4996601), (19, 1051916), (38, 525958), (76, 262979), (361, 55364), (722, 27682), (1444, 13841)]