21297704

素因数分解:

$2^3\times {\mathrm{853}}^1\times {\mathrm{3121}}^1$

素因数の和:3980

約数の個数: 16

約数和(自身を含む): 39992820

約数和(自身を除く): 18695116

約数列:

[1, 2, 4, 8, 853, 1706, 3121, 3412, 6242, 6824, 12484, 24968, 2662213, 5324426, 10648852, 21297704]

約数ペア:

[(1, 21297704), (2, 10648852), (4, 5324426), (8, 2662213), (853, 24968), (1706, 12484), (3121, 6824), (3412, 6242)]