21033608

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1949}}^1$

素因数の和:2045

約数の個数: 32

約数和(自身を含む): 42120000

約数和(自身を除く): 21086392

約数列:

[1, 2, 4, 8, 19, 38, 71, 76, 142, 152, 284, 568, 1349, 1949, 2698, 3898, 5396, 7796, 10792, 15592, 37031, 74062, 138379, 148124, 276758, 296248, 553516, 1107032, 2629201, 5258402, 10516804, 21033608]

約数ペア:

[(1, 21033608), (2, 10516804), (4, 5258402), (8, 2629201), (19, 1107032), (38, 553516), (71, 296248), (76, 276758), (142, 148124), (152, 138379), (284, 74062), (568, 37031), (1349, 15592), (1949, 10792), (2698, 7796), (3898, 5396)]