21458128

素因数分解:

$2^4\times {\mathrm{569}}^1\times {\mathrm{2357}}^1$

素因数の和:2934

約数の個数: 20

約数和(自身を含む): 41665860

約数和(自身を除く): 20207732

約数列:

[1, 2, 4, 8, 16, 569, 1138, 2276, 2357, 4552, 4714, 9104, 9428, 18856, 37712, 1341133, 2682266, 5364532, 10729064, 21458128]

約数ペア:

[(1, 21458128), (2, 10729064), (4, 5364532), (8, 2682266), (16, 1341133), (569, 37712), (1138, 18856), (2276, 9428), (2357, 9104), (4552, 4714)]