20499920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36607}}^1$

素因数の和:36627

約数の個数: 40

約数和(自身を含む): 54472704

約数和(自身を除く): 33972784

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36607, 73214, 146428, 183035, 256249, 292856, 366070, 512498, 585712, 732140, 1024996, 1281245, 1464280, 2049992, 2562490, 2928560, 4099984, 5124980, 10249960, 20499920]

約数ペア:

[(1, 20499920), (2, 10249960), (4, 5124980), (5, 4099984), (7, 2928560), (8, 2562490), (10, 2049992), (14, 1464280), (16, 1281245), (20, 1024996), (28, 732140), (35, 585712), (40, 512498), (56, 366070), (70, 292856), (80, 256249), (112, 183035), (140, 146428), (280, 73214), (560, 36607)]