20553478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{49171}}^1$

素因数の和:49203

約数の個数: 16

約数和(自身を含む): 35403840

約数和(自身を除く): 14850362

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 49171, 98342, 540881, 934249, 1081762, 1868498, 10276739, 20553478]

約数ペア:

[(1, 20553478), (2, 10276739), (11, 1868498), (19, 1081762), (22, 934249), (38, 540881), (209, 98342), (418, 49171)]