21816568

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 41817600

約数和(自身を除く): 20001032

約数列:

[1, 2, 4, 8, 109, 127, 197, 218, 254, 394, 436, 508, 788, 872, 1016, 1576, 13843, 21473, 25019, 27686, 42946, 50038, 55372, 85892, 100076, 110744, 171784, 200152, 2727071, 5454142, 10908284, 21816568]

約数ペア:

[(1, 21816568), (2, 10908284), (4, 5454142), (8, 2727071), (109, 200152), (127, 171784), (197, 110744), (218, 100076), (254, 85892), (394, 55372), (436, 50038), (508, 42946), (788, 27686), (872, 25019), (1016, 21473), (1576, 13843)]