20218245876

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{72271}}^1$

素因数の和:72709

約数の個数: 72

約数和(自身を含む): 53929366400

約数和(自身を除く): 33711120524

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 409, 684, 818, 1227, 1636, 2454, 3681, 4908, 7362, 7771, 14724, 15542, 23313, 31084, 46626, 69939, 72271, 93252, 139878, 144542, 216813, 279756, 289084, 433626, 650439, 867252, 1300878, 1373149, 2601756, 2746298, 4119447, 5492596, 8238894, 12358341, 16477788, 24716682, 29558839, 49433364, 59117678, 88676517, 118235356, 177353034, 266029551, 354706068, 532059102, 561617941, 1064118204, 1123235882, 1684853823, 2246471764, 3369707646, 5054561469, 6739415292, 10109122938, 20218245876]

約数ペア:

[(1, 20218245876), (2, 10109122938), (3, 6739415292), (4, 5054561469), (6, 3369707646), (9, 2246471764), (12, 1684853823), (18, 1123235882), (19, 1064118204), (36, 561617941), (38, 532059102), (57, 354706068), (76, 266029551), (114, 177353034), (171, 118235356), (228, 88676517), (342, 59117678), (409, 49433364), (684, 29558839), (818, 24716682), (1227, 16477788), (1636, 12358341), (2454, 8238894), (3681, 5492596), (4908, 4119447), (7362, 2746298), (7771, 2601756), (14724, 1373149), (15542, 1300878), (23313, 867252), (31084, 650439), (46626, 433626), (69939, 289084), (72271, 279756), (93252, 216813), (139878, 144542)]