2557420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1801}}^1$

素因数の和:1881

約数の個数: 24

約数和(自身を含む): 5449248

約数和(自身を除く): 2891828

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 1801, 3602, 7204, 9005, 18010, 36020, 127871, 255742, 511484, 639355, 1278710, 2557420]

約数ペア:

[(1, 2557420), (2, 1278710), (4, 639355), (5, 511484), (10, 255742), (20, 127871), (71, 36020), (142, 18010), (284, 9005), (355, 7204), (710, 3602), (1420, 1801)]