19913564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{4481}}^1$

素因数の和:4597

約数の個数: 24

約数和(自身を含む): 38401776

約数和(自身を除く): 18488212

約数列:

[1, 2, 4, 11, 22, 44, 101, 202, 404, 1111, 2222, 4444, 4481, 8962, 17924, 49291, 98582, 197164, 452581, 905162, 1810324, 4978391, 9956782, 19913564]

約数ペア:

[(1, 19913564), (2, 9956782), (4, 4978391), (11, 1810324), (22, 905162), (44, 452581), (101, 197164), (202, 98582), (404, 49291), (1111, 17924), (2222, 8962), (4444, 4481)]