20761528

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{997}}^1$

素因数の和:1159

約数の個数: 32

約数和(自身を含む): 41317200

約数和(自身を除く): 20555672

約数列:

[1, 2, 4, 8, 19, 38, 76, 137, 152, 274, 548, 997, 1096, 1994, 2603, 3988, 5206, 7976, 10412, 18943, 20824, 37886, 75772, 136589, 151544, 273178, 546356, 1092712, 2595191, 5190382, 10380764, 20761528]

約数ペア:

[(1, 20761528), (2, 10380764), (4, 5190382), (8, 2595191), (19, 1092712), (38, 546356), (76, 273178), (137, 151544), (152, 136589), (274, 75772), (548, 37886), (997, 20824), (1096, 18943), (1994, 10412), (2603, 7976), (3988, 5206)]