19798160

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4057}}^1$

素因数の和:4131

約数の個数: 40

約数和(自身を含む): 46796856

約数和(自身を除く): 26998696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4057, 4880, 8114, 16228, 20285, 32456, 40570, 64912, 81140, 162280, 247477, 324560, 494954, 989908, 1237385, 1979816, 2474770, 3959632, 4949540, 9899080, 19798160]

約数ペア:

[(1, 19798160), (2, 9899080), (4, 4949540), (5, 3959632), (8, 2474770), (10, 1979816), (16, 1237385), (20, 989908), (40, 494954), (61, 324560), (80, 247477), (122, 162280), (244, 81140), (305, 64912), (488, 40570), (610, 32456), (976, 20285), (1220, 16228), (2440, 8114), (4057, 4880)]