20914539

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 10189461

約数列:

[1, 3, 17, 29, 51, 79, 87, 179, 237, 493, 537, 1343, 1479, 2291, 3043, 4029, 5191, 6873, 9129, 14141, 15573, 38947, 42423, 88247, 116841, 240397, 264741, 410089, 721191, 1230267, 6971513, 20914539]

約数ペア:

[(1, 20914539), (3, 6971513), (17, 1230267), (29, 721191), (51, 410089), (79, 264741), (87, 240397), (179, 116841), (237, 88247), (493, 42423), (537, 38947), (1343, 15573), (1479, 14141), (2291, 9129), (3043, 6873), (4029, 5191)]