20855379

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{239}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 10248621

約数列:

[1, 3, 17, 29, 51, 59, 87, 177, 239, 493, 717, 1003, 1479, 1711, 3009, 4063, 5133, 6931, 12189, 14101, 20793, 29087, 42303, 87261, 117827, 239717, 353481, 408929, 719151, 1226787, 6951793, 20855379]

約数ペア:

[(1, 20855379), (3, 6951793), (17, 1226787), (29, 719151), (51, 408929), (59, 353481), (87, 239717), (177, 117827), (239, 87261), (493, 42303), (717, 29087), (1003, 20793), (1479, 14101), (1711, 12189), (3009, 6931), (4063, 5133)]