19910228

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29453}}^1$

素因数の和:29483

約数の個数: 18

約数和(自身を含む): 37730574

約数和(自身を除く): 17820346

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 29453, 58906, 117812, 382889, 765778, 1531556, 4977557, 9955114, 19910228]

約数ペア:

[(1, 19910228), (2, 9955114), (4, 4977557), (13, 1531556), (26, 765778), (52, 382889), (169, 117812), (338, 58906), (676, 29453)]