21599440

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2477}}^1$

素因数の和:2599

約数の個数: 40

約数和(自身を含む): 50699880

約数和(自身を除く): 29100440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 2477, 4360, 4954, 8720, 9908, 12385, 19816, 24770, 39632, 49540, 99080, 198160, 269993, 539986, 1079972, 1349965, 2159944, 2699930, 4319888, 5399860, 10799720, 21599440]

約数ペア:

[(1, 21599440), (2, 10799720), (4, 5399860), (5, 4319888), (8, 2699930), (10, 2159944), (16, 1349965), (20, 1079972), (40, 539986), (80, 269993), (109, 198160), (218, 99080), (436, 49540), (545, 39632), (872, 24770), (1090, 19816), (1744, 12385), (2180, 9908), (2477, 8720), (4360, 4954)]