20811764

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{6679}}^1$

素因数の和:6743

約数の個数: 24

約数和(自身を含む): 39278400

約数和(自身を除く): 18466636

約数列:

[1, 2, 4, 19, 38, 41, 76, 82, 164, 779, 1558, 3116, 6679, 13358, 26716, 126901, 253802, 273839, 507604, 547678, 1095356, 5202941, 10405882, 20811764]

約数ペア:

[(1, 20811764), (2, 10405882), (4, 5202941), (19, 1095356), (38, 547678), (41, 507604), (76, 273839), (82, 253802), (164, 126901), (779, 26716), (1558, 13358), (3116, 6679)]