20400872

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{181}}^1\times {\mathrm{193}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 39191880

約数和(自身を除く): 18791008

約数列:

[1, 2, 4, 8, 73, 146, 181, 193, 292, 362, 386, 584, 724, 772, 1448, 1544, 13213, 14089, 26426, 28178, 34933, 52852, 56356, 69866, 105704, 112712, 139732, 279464, 2550109, 5100218, 10200436, 20400872]

約数ペア:

[(1, 20400872), (2, 10200436), (4, 5100218), (8, 2550109), (73, 279464), (146, 139732), (181, 112712), (193, 105704), (292, 69866), (362, 56356), (386, 52852), (584, 34933), (724, 28178), (772, 26426), (1448, 14089), (1544, 13213)]