20520684

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^2\times {\mathrm{1579}}^1$

素因数の和:1627

約数の個数: 54

約数和(自身を含む): 54780180

約数和(自身を除く): 34259496

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 361, 684, 722, 1083, 1444, 1579, 2166, 3158, 3249, 4332, 4737, 6316, 6498, 9474, 12996, 14211, 18948, 28422, 30001, 56844, 60002, 90003, 120004, 180006, 270009, 360012, 540018, 570019, 1080036, 1140038, 1710057, 2280076, 3420114, 5130171, 6840228, 10260342, 20520684]

約数ペア:

[(1, 20520684), (2, 10260342), (3, 6840228), (4, 5130171), (6, 3420114), (9, 2280076), (12, 1710057), (18, 1140038), (19, 1080036), (36, 570019), (38, 540018), (57, 360012), (76, 270009), (114, 180006), (171, 120004), (228, 90003), (342, 60002), (361, 56844), (684, 30001), (722, 28422), (1083, 18948), (1444, 14211), (1579, 12996), (2166, 9474), (3158, 6498), (3249, 6316), (4332, 4737)]