20479986

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{19961}}^1$

素因数の和:19991

約数の個数: 32

約数和(自身を含む): 47908800

約数和(自身を除く): 27428814

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 114, 171, 342, 513, 1026, 19961, 39922, 59883, 119766, 179649, 359298, 379259, 538947, 758518, 1077894, 1137777, 2275554, 3413331, 6826662, 10239993, 20479986]

約数ペア:

[(1, 20479986), (2, 10239993), (3, 6826662), (6, 3413331), (9, 2275554), (18, 1137777), (19, 1077894), (27, 758518), (38, 538947), (54, 379259), (57, 359298), (114, 179649), (171, 119766), (342, 59883), (513, 39922), (1026, 19961)]