21379882

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{1997}}^1$

素因数の和:2153

約数の個数: 16

約数和(自身を含む): 33014952

約数和(自身を除く): 11635070

約数列:

[1, 2, 53, 101, 106, 202, 1997, 3994, 5353, 10706, 105841, 201697, 211682, 403394, 10689941, 21379882]

約数ペア:

[(1, 21379882), (2, 10689941), (53, 403394), (101, 211682), (106, 201697), (202, 105841), (1997, 10706), (3994, 5353)]