21456974

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{503}}^1$

素因数の和:800

約数の個数: 32

約数和(自身を含む): 40352256

約数和(自身を除く): 18895282

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 277, 503, 554, 1006, 1939, 3047, 3521, 3878, 5533, 6094, 7042, 11066, 21329, 38731, 42658, 77462, 139331, 278662, 975317, 1532641, 1950634, 3065282, 10728487, 21456974]

約数ペア:

[(1, 21456974), (2, 10728487), (7, 3065282), (11, 1950634), (14, 1532641), (22, 975317), (77, 278662), (154, 139331), (277, 77462), (503, 42658), (554, 38731), (1006, 21329), (1939, 11066), (3047, 7042), (3521, 6094), (3878, 5533)]