20740468

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^2\times {\mathrm{139}}^1$

素因数の和:296

約数の個数: 36

約数和(自身を含む): 42359520

約数和(自身を除く): 21619052

約数列:

[1, 2, 4, 7, 14, 28, 73, 139, 146, 278, 292, 511, 556, 973, 1022, 1946, 2044, 3892, 5329, 10147, 10658, 20294, 21316, 37303, 40588, 71029, 74606, 142058, 149212, 284116, 740731, 1481462, 2962924, 5185117, 10370234, 20740468]

約数ペア:

[(1, 20740468), (2, 10370234), (4, 5185117), (7, 2962924), (14, 1481462), (28, 740731), (73, 284116), (139, 149212), (146, 142058), (278, 74606), (292, 71029), (511, 40588), (556, 37303), (973, 21316), (1022, 20294), (1946, 10658), (2044, 10147), (3892, 5329)]