20080120

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2083}}^1$

素因数の和:2335

約数の個数: 32

約数和(自身を含む): 45389520

約数和(自身を除く): 25309400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2083, 2410, 4166, 4820, 8332, 9640, 10415, 16664, 20830, 41660, 83320, 502003, 1004006, 2008012, 2510015, 4016024, 5020030, 10040060, 20080120]

約数ペア:

[(1, 20080120), (2, 10040060), (4, 5020030), (5, 4016024), (8, 2510015), (10, 2008012), (20, 1004006), (40, 502003), (241, 83320), (482, 41660), (964, 20830), (1205, 16664), (1928, 10415), (2083, 9640), (2410, 8332), (4166, 4820)]