142442020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{145349}}^1$

素因数の和:145372

約数の個数: 36

約数和(自身を含む): 347967900

約数和(自身を除く): 205525880

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 145349, 290698, 581396, 726745, 1017443, 1453490, 2034886, 2906980, 4069772, 5087215, 7122101, 10174430, 14244202, 20348860, 28488404, 35610505, 71221010, 142442020]

約数ペア:

[(1, 142442020), (2, 71221010), (4, 35610505), (5, 28488404), (7, 20348860), (10, 14244202), (14, 10174430), (20, 7122101), (28, 5087215), (35, 4069772), (49, 2906980), (70, 2034886), (98, 1453490), (140, 1017443), (196, 726745), (245, 581396), (490, 290698), (980, 145349)]