21705424

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{433}}^1$

素因数の和:695

約数の個数: 40

約数和(自身を含む): 45582152

約数和(自身を除く): 23876728

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 241, 433, 482, 866, 964, 1732, 1928, 3133, 3464, 3856, 5629, 6266, 6928, 11258, 12532, 22516, 25064, 45032, 50128, 90064, 104353, 208706, 417412, 834824, 1356589, 1669648, 2713178, 5426356, 10852712, 21705424]

約数ペア:

[(1, 21705424), (2, 10852712), (4, 5426356), (8, 2713178), (13, 1669648), (16, 1356589), (26, 834824), (52, 417412), (104, 208706), (208, 104353), (241, 90064), (433, 50128), (482, 45032), (866, 25064), (964, 22516), (1732, 12532), (1928, 11258), (3133, 6928), (3464, 6266), (3856, 5629)]