1288983890

素因数分解:

$2^1\times 5^1\times {\mathrm{11161}}^1\times {\mathrm{11549}}^1$

素因数の和:22717

約数の個数: 16

約数和(自身を含む): 2320579800

約数和(自身を除く): 1031595910

約数列:

[1, 2, 5, 10, 11161, 11549, 22322, 23098, 55805, 57745, 111610, 115490, 128898389, 257796778, 644491945, 1288983890]

約数ペア:

[(1, 1288983890), (2, 644491945), (5, 257796778), (10, 128898389), (11161, 115490), (11549, 111610), (22322, 57745), (23098, 55805)]