21052516

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{937}}^1$

素因数の和:1119

約数の個数: 24

約数和(自身を含む): 38056536

約数和(自身を除く): 17004020

約数列:

[1, 2, 4, 41, 82, 137, 164, 274, 548, 937, 1874, 3748, 5617, 11234, 22468, 38417, 76834, 128369, 153668, 256738, 513476, 5263129, 10526258, 21052516]

約数ペア:

[(1, 21052516), (2, 10526258), (4, 5263129), (41, 513476), (82, 256738), (137, 153668), (164, 128369), (274, 76834), (548, 38417), (937, 22468), (1874, 11234), (3748, 5617)]