21391136

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{51421}}^1$

素因数の和:51444

約数の個数: 24

約数和(自身を含む): 45354204

約数和(自身を除く): 23963068

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 51421, 102842, 205684, 411368, 668473, 822736, 1336946, 1645472, 2673892, 5347784, 10695568, 21391136]

約数ペア:

[(1, 21391136), (2, 10695568), (4, 5347784), (8, 2673892), (13, 1645472), (16, 1336946), (26, 822736), (32, 668473), (52, 411368), (104, 205684), (208, 102842), (416, 51421)]