21290560

素因数分解:

$2^6\times 5^1\times {\mathrm{66533}}^1$

素因数の和:66550

約数の個数: 28

約数和(自身を含む): 50698908

約数和(自身を除く): 29408348

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66533, 133066, 266132, 332665, 532264, 665330, 1064528, 1330660, 2129056, 2661320, 4258112, 5322640, 10645280, 21290560]

約数ペア:

[(1, 21290560), (2, 10645280), (4, 5322640), (5, 4258112), (8, 2661320), (10, 2129056), (16, 1330660), (20, 1064528), (32, 665330), (40, 532264), (64, 332665), (80, 266132), (160, 133066), (320, 66533)]