21580816

素因数分解:

$2^4\times {\mathrm{619}}^1\times {\mathrm{2179}}^1$

素因数の和:2806

約数の個数: 20

約数和(自身を含む): 41899600

約数和(自身を除く): 20318784

約数列:

[1, 2, 4, 8, 16, 619, 1238, 2179, 2476, 4358, 4952, 8716, 9904, 17432, 34864, 1348801, 2697602, 5395204, 10790408, 21580816]

約数ペア:

[(1, 21580816), (2, 10790408), (4, 5395204), (8, 2697602), (16, 1348801), (619, 34864), (1238, 17432), (2179, 9904), (2476, 8716), (4358, 4952)]