19802486

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{4973}}^1$

素因数の和:5167

約数の個数: 16

約数和(自身を含む): 32589648

約数和(自身を除く): 12787162

約数列:

[1, 2, 11, 22, 181, 362, 1991, 3982, 4973, 9946, 54703, 109406, 900113, 1800226, 9901243, 19802486]

約数ペア:

[(1, 19802486), (2, 9901243), (11, 1800226), (22, 900113), (181, 109406), (362, 54703), (1991, 9946), (3982, 4973)]