19805812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{380881}}^1$

素因数の和:380898

約数の個数: 12

約数和(自身を含む): 37326436

約数和(自身を除く): 17520624

約数列:

[1, 2, 4, 13, 26, 52, 380881, 761762, 1523524, 4951453, 9902906, 19805812]

約数ペア:

[(1, 19805812), (2, 9902906), (4, 4951453), (13, 1523524), (26, 761762), (52, 380881)]